History of Civilization in England, Vol. 1 of 3

60

The standard of comfort being of course supposed the same.

61

‘No point is better established, than that the supply of labourers will always ultimately be in proportion to the means of supporting them.’ Principles of Political Economy, chap. xxi. in Ricardo's Works, p. 176. Compare Smith's Wealth of Nations, book i. chap. xi. p. 86, and M'Culloch's Political Economy, p. 222.

62

The division of food into azotized and non-azotized is said to have been first pointed out by Magendie. See Müller's Physiology, vol. i. p. 525. It is now recognised by most of the best authorities. See, for instance, Liebig's Animal Chemistry, p. 134; Carpenter's Human Physiology, p. 685; Brande's Chemistry, vol. ii. pp. 1218, 1870. The first tables of food constructed according to it were by Boussingault; see an elaborate essay by Messrs. Lawes and Gilbert on The Composition of Foods, in Report of British Association for 1852, p. 323: but the experiments made by these gentlemen are neither numerous nor diversified enough to establish a general law; still less can we accept their singular assertion, p. 346, that the comparative prices of different foods are a test of the nutriment they comparatively contain.

63

‘Of all the elements of the animal body, nitrogen has the feeblest attraction for oxygen; and, what is still more remarkable, it deprives all combustible elements with which it combines, to a greater or less extent, of the power of combining with oxygen, that is, of undergoing combustion.’ Liebig's Letters on Chemistry, p. 372.

64

The doctrine of what may be called the protecting power of some substances is still imperfectly understood, and until late in the eighteenth century, its existence was hardly suspected. It is now known to be connected with the general theory of poisons. See Turner's Chemistry, vol. i. p. 516. To this we must probably ascribe the fact that several poisons which are fatal when applied to a wounded surface, may be taken into the stomach with impunity. Brodie's Physiological Researches, 1851, pp. 137, 138. It seems more reasonable to refer this to chemical laws than to hold, with Sir Benjamin Brodie, that some poisons ‘destroy life by paralysing the muscles of respiration without immediately affecting the action of the heart.’

65

Prout's well-known division into saccharine, oily, and albuminous, appears to me of much inferior value, though I observe that it is adopted in the last edition of Elliotson's Human Physiology, pp. 65, 160. The division by M. Lepelletier into ‘les alimens solides et les boissons’ is of course purely empirical. Lepelletier, Physiologie Médicale, vol. ii. p. 100, Paris, 1832. In regard to Prout's classification, compare Burdach's Traité de Physiologie, vol. ix. p. 240, with Wagner's Physiology, p. 452.

66

The evidence of an universal connexion in the animal frame between exertion and decay, is now almost complete. In regard to the muscular system, see Carpenter's Human Physiology, pp. 440, 441, 581, edit. 1846: ‘there is strong reason to believe the waste or decomposition of the muscular tissue to be in exact proportion to the degree in which it is exerted.’ This perhaps would be generally anticipated even in the absence of direct proof; but what is more interesting, is that the same principle holds good of the nervous system. The human brain of an adult contains about one and a half per cent of phosphorus; and it has been ascertained, that after the mind has been much exercised, phosphates are excreted, and that in the case of inflammation of the brain their excretion (by the kidneys) is very considerable. See Paget's Lectures on Surgical Pathology, 1853, vol. i. pp. 6, 7, 434; Carpenter's Human Physiology, pp. 192, 193, 222; Simon's Animal Chemistry, vol. ii. p. 426; Henle, Anatomie Générale, vol. ii. p. 172. The reader may also consult respecting the phosphorus of the brain the recent very able work of MM. Robin et Verdeil, Chimie Anatomique, vol. i. p. 215, vol. ii. p. 348, Paris, 1853. According to these writers (vol. iii. p. 445), its existence in the brain was first announced by Hensing, in 1779.

67

Though both objects are equally essential, the former is usually the more pressing; and it has been ascertained by experiment, what we should expect from theory, that when animals are starved to death, there is a progressive decline in the temperature of their bodies; so that the proximate cause of death by starvation is not weakness, but cold. See Williams's Principles of Medicine, p. 36; and on the connexion between the loss of animal heat and the appearance of rigor mortis in the contractile parts of the body, see Vogel's Pathological Anatomy of the Human Body, p. 532. Compare the important and thoughtful work of Burdach, Physiologie comme Science d'Observation, vol. v. pp. 144, 436, vol. ix. p. 231.

68

Until the last twenty or five-and-twenty years, it used to be supposed that this combination took place in the lungs; but more careful experiments have made it probable that the oxygen unites with the carbon in the circulation, and that the blood-corpuscules are the carriers of the oxygen. Compare Liebig's Animal Chemistry, p. 78; Letters on Chemistry, pp. 335, 336; Turner's Chemistry, vol. ii. p. 1319; Müller's Physiology, vol. i. pp. 92, 159. That the combination does not take place in the air-cells is moreover proved by the fact that the lungs are not hotter than other parts of the body. See Müller, vol. i. p. 348; Thomson's Animal Chemistry, p. 633; and Brodie's Physiol. Researches, p. 33. Another argument in favour of the red corpuscules being the carriers of oxygen, is that they are most abundant in those classes of the vertebrata which maintain the highest temperature; while the blood of invertebrata contains very few of them; and it has been doubted if they even exist in the lower articulata and mollusca. See Carpenter's Human Physiol. pp. 109, 532; Grant's Comparative Anatomy, p. 472; Elliotson's Human Physiol. p. 159. In regard to the different dimensions of corpuscules, see Henle, Anatomie Générale, vol. i. pp. 457–467, 494, 495; Blainville, Physiologie Comparée, vol. i. pp. 298, 299, 301–304; Milne Edwards, Zoologie, part i. pp. 54–56; Fourth Report of British Association, pp. 117, 118; Simon's Animal Chemistry, vol. i. pp. 103, 104; and, above all, the important observations of Mr. Gulliver (Carpenter, pp. 105, 106). These additions to our knowledge, besides being connected with the laws of animal heat and of nutrition, will, when generalized, assist speculative minds in raising pathology to a science. In the mean time I may mention the relation between an examination of the corpuscules and the theory of inflammation which Hunter and Broussais were unable to settle: this is, that the proximate cause of inflammation is the obstruction of the vessels by the adhesion of the pale corpuscules. Respecting this striking generalization, which is still on its trial, compare Williams's Principles of Medicine, 1848, pp. 258–265, with Paget's Surgical Pathology, 1853, vol. i. pp. 313–317; Jones and Sieveking's Pathological Anatomy, 1854, pp. 28, 105, 106. The difficulties connected with the scientific study of inflammation are evaded in Vogel's Pathological Anatomy, p. 418; a work which appears to me to have been greatly overrated.

69

On the amount of heat disengaged by the union of carbon and oxygen, see the experiments of Dulong, in Liebig's Animal Chemistry, p. 44; and those of Despretz, in Thomson's Animal Chemistry, p. 634. Just in the same way, we find that the temperature of plants is maintained by the combination of oxygen with carbon: see Balfour's Botany, pp. 231, 232, 322, 323. As to the amount of heat caused generally by chemical combination, there is an essay well worth reading by Dr. Thomas Andrews in Report of British Association for 1849, pp. 63–78. See also Report for 1852, Transac. of Sec. p. 40, and Liebig and Kopp's Reports on the Progress of Chemistry, vol. i. p. 34, vol. iii. p. 16, vol. iv. p. 20; also Pouillet, Elémens de Physique, Paris, 1832, vol. i. part i. p. 411.

70

The law of definite proportions, which, since the brilliant discoveries by Dalton, is the corner-stone of chemical knowledge, is laid down with admirable clearness in Turner's Elements of Chemistry, vol. i. pp. 146–151. Compare Brande's Chemistry, vol. i. pp. 139–144; Cuvier, Progrès des Sciences, vol. ii. p. 255; Somerville's Connexion of the Sciences, pp. 120, 121. But none of these writers have considered the law so philosophically as M. A. Comte, Philosophie Positive, vol. iii. pp. 133–176, one of the best chapters in his very profound, but ill-understood work.

71

‘Ainsi, dans des temps égaux, la quantité d'oxygène consommée par le même animal est d'autant plus grande que la température ambiante est moins élevée.’ Robin et Verdeil, Chimie Anatomique, vol. ii. p. 44. Compare Simon's Lectures on Pathology, 1850, p. 188, for the diminished quantity of respiration in a high temperature; though one may question Mr. Simon's inference that therefore the blood is more venous in hot countries than in cold ones. This is not making allowance for the difference of diet, which corrects the difference of temperature.

72

‘The consumption of oxygen in a given time may be expressed by the number of respirations.’ Liebig's Letters on Chemistry, p. 314; and see Thomson's Animal Chemistry, p. 611. It is also certain that exercise increases the number of respirations; and birds, which are the most active of all animals, consume more oxygen than any others. Milne Edwards, Zoologie, part i. p. 88, part ii. p. 371; Flourens, Travaux de Cuvier, pp. 153, 154, 265, 266. Compare, on the connexion between respiration and the locomotive organs, Beclard, Anatomie Générale, pp. 39, 44; Burdach, Traité de Physiologie, vol. ix. pp. 485, 556–559; Carus's Comparative Anatomy, vol. i. pp. 99, 164, 358, vol. ii. pp. 142, 160; Grant's Comparative Anatomy, pp. 455, 495, 522, 529, 537; Rymer Jones's Animal Kingdom, pp. 369, 440, 692, 714, 720; Owen's Invertebrata, pp. 322, 345, 386, 505. Thus too it has been experimentally ascertained, that in human beings exercise increases the amount of carbonic-acid gas. Mayo's Human Physiology, p. 64; Liebig and Kopp's Reports, vol. iii. p. 359.

If we now put these facts together, their bearing on the propositions in the text will become evident; because, on the whole, there is more exercise taken in cold climates than in hot ones, and there must therefore be an increased respiratory action. For proof that greater exercise is both taken and required, compare Wrangel's Polar Expedition, pp. 79, 102; Richardson's Arctic Expedition, vol. i. p. 385; Simpson's North Coast of America, pp. 49,88, which should be contrasted with the contempt for such amusements in hot countries. Indeed, in polar regions all this is so essential to preserve a normal state, that scurvy can only be kept off in the northern part of the American continent by taking considerable exercise: see Crantz, History of Greenland, vol. i. pp. 46, 62, 338.

73

See the note at the end of this chapter.

74

‘The fruits used by the inhabitants of southern climes do not contain, in a fresh state, more than 12 per cent. of carbon; while the blubber and train-oil which feed the inhabitants of polar regions contain 66 to 80 per cent. of that element.’ Liebig's Letters on Chemistry, p. 320; see also p. 375, and Turner's Chemistry, vol. ii. p. 1315. According to Prout (Mayo's Human Physiol. p. 136), ‘the proportion of carbon in oily bodies varies from about 60 to 80 per cent.’ The quantity of oil and fat habitually consumed in cold countries is remarkable. Wrangel (Polar Expedition, p. 21) says of the tribes in the north-east of Siberia, ‘fat is their greatest delicacy. They eat it in every possible shape; raw, melted, fresh, or spoilt.’ See also Simpson's Discoveries on the North Coast of America, pp. 147, 404.

75

‘So common, that no plant is destitute of it.’ Lindley's Botany, vol. i. p. 111; and at p. 121, ‘starch is the most common of all vegetable productions.’ Dr. Lindley adds (vol. i. p. 292), that it is difficult to distinguish the grains of starch secreted by plants from cytoblasts. See also on the starch-granules, first noticed by M. Link, Reports on Botany by the Ray Society, pp. 223, 370; and respecting its predominance in the vegetable world, compare Thomson's Chemistry of Vegetables, pp. 650–652, 875; Brande's Chemistry, vol. ii. p. 1160; Turner's Chemistry, vol. ii. p. 1236; Liebig and Kopp's Reports, vol. ii. pp. 97, 98, 122.

76

The oxygen is 49.39 out of 100. See the table in Liebig's Letters on Chemistry, p. 379. Amidin, which is the soluble part of starch, contains 53.33 per cent. of oxygen. See Thomson's Chemistry of Vegetables, p. 654, on the authority of Prout, who has the reputation of being an accurate experimenter.

77

Of which a single whale will yield ‘cent vingt tonneaux.’ Cuvier, Règne Animal, vol. i. p. 297. In regard to the solid food, Sir J. Richardson (Arctic Expedition, 1851, vol. i. p. 243) says that the inhabitants of the Arctic regions only maintain themselves by chasing whales and ‘consuming blubber.’

78

It is said, that to keep a person in health, his food, even in the temperate parts of Europe, should contain ‘a full eighth more carbon in winter than in summer.’ Liebig's Animal Chemistry, p. 16.

79

The most highly carbonized of all foods are undoubtedly yielded by animals; the most highly oxidized by vegetables. In the vegetable kingdom there is, however, so much carbon, that its predominance, accompanied with the rarity of nitrogen, has induced chemical botanists to characterize plants as carbonized, and animals as azotized. But we have here to attend to a double antithesis. Vegetables are carbonized in so far as they are non-azotized; but they are oxidized in opposition to the highly carbonized animal food of cold countries. Besides this, it is important to observe that the carbon of vegetables is most abundant in the woody and unnutritious part, which is not eaten; while the carbon of animals is found in the fatty and oily parts, which are not only eaten, but are, in cold countries, greedily devoured.

80

Sir J. Malcolm (History of Persia, vol. ii. p. 380), speaking of the cheapness of vegetables in the East, says, ‘in some parts of Persia fruit has hardly any value.’ Cuvier, in a striking passage (Règne Animal, vol. i. pp. 73, 74), has contrasted vegetable with animal food, and thinks that the former, being so easily obtained, is the more natural. But the truth is that both are equally natural: though when Cuvier wrote scarcely anything was known of the laws which govern the relation between climate and food. On the skill and energy required to obtain food in cold countries, see Wrangel's Polar Expedition, pp. 70, 71, 191, 192; Simpson's Discoveries on the North Coast of America, p. 249; Crantz, History of Greenland, vol. i. pp. 22, 32, 105, 131, 154, 155, vol. ii. pp. 203, 265, 324.

81

‘Cabanis’ (Rapports du Physique et du Moral, p. 313) says, ‘Dans les temps et dans les pays froids on mange et l'on agit davantage.’ That much food is eaten in cold countries, and little in hot ones, is mentioned by numerous travellers, none of whom are aware of the cause. See Simpson's Discov. on North Coast of America, p. 218; Custine's Russie, vol. iv. p. 66; Wrangel's Expedition, pp. 21, 327; Crantz, History of Greenland, vol. i. pp. 145, 360; Richardson's Central Africa, vol. ii. p. 46; Richardson's Sahara, vol. i. p. 137; Denham's Africa, p. 37; Journal of Asiatic Society, vol. v. p. 144, vol. viii. p. 188; Burckhardt's Travels in Arabia, vol. ii. p. 265; Niebuhr, Description de l'Arabie, p. 45; Ulloa's Voyage to South America, vol. i. pp. 403, 408; Journal of Geograph. Society, vol. iii. p. 283, vol. vi. p. 85, vol. xix. p. 121; Spix and Martius's Travels in Brazil, vol. i. p. 164; Southey's History of Brazil, vol. iii. p. 848; Volney, Voyage en Syrie et en Egypte, vol. i. pp. 379, 380, 460; Low's Sarawak, p. 140.

82

Meyen (Geography of Plants, 1846, p. 313) says that the potato was introduced into Ireland in 1586; but according to Mr. M'Culloch (Dictionary of Commerce, 1849, p. 1048), ‘potatoes, it is commonly thought, were not introduced into Ireland till 1610, when a small quantity was sent by Sir Walter Raleigh to be planted in a garden on his estate in the vicinity of Youghall.’ Compare Loudon's Encyclop. of Agriculture, p. 845: ‘first planted by Sir Walter Raleigh on his estate of Youghall, near Cork.’

83

Adam Smith (Wealth of Nations, book i. chap. xi. p. 67) supposes that it will support three times as many; but the statistics of this great writer are the weakest part of his work, and the more careful calculations made since he wrote bear out the statement in the text. ‘It admits of demonstration that an acre of potatoes will feed double the number of people that can be fed from an acre of wheat.’ Loudon's Encyclop. of Agriculture, 5th edit. 1844, p. 845. So, too, in M'Culloch's Dict. p. 1048, ‘an acre of potatoes will feed double the number of individuals that can be fed from an acre of wheat.’ The daily average consumption of an able-bodied labourer in Ireland is estimated at nine and a half pounds of potatoes for men, and seven and a half for women. See Phillips on Scrofula, 1846, p. 177.

84

Malthus, Essay on Population, vol. i. pp. 424, 425, 431, 435, 441, 442; M'Culloch's Political Economy, pp. 381, 382.

85

The lowest agricultural wages in our time have been in England about 1s. a day; while from the evidence collected by Mr. Thornton in 1845, the highest wages then paid were in Lincolnshire, and were rather more than 13s. a week; those in Yorkshire and Northumberland being nearly as high. Thornton on Over-Population, pp. 12–15, 24, 25. Godwin, writing in 1820, estimates the average at 1s. 6d. a day. Godwin on Population, p. 574. Mr. Phillips, in his work On Scrofula, 1846, p. 345, says, ‘at present the ratio of wages is from 9s. to 10s.’

86

The most miserable part, namely Connaught, in 1733, contained 242,160 inhabitants; and in 1821, 1,110,229. See Sadler's Law of Population, vol. ii. p. 490.

87

Mr. Inglis, who in 1834 travelled through Ireland with a particular view to its economical state, says, as the result of very careful inquiries, ‘I am quite confident, that if the whole yearly earnings of the labourers of Ireland were divided by the whole number of labourers, the result would be under this sum —Fourpence a day for the labourers of Ireland.’ Inglis, Journey throughout Ireland in 1834, Lond. 1835, 2nd edit. vol. ii. p. 300. At Balinasloe, in the county of Galway, ‘A gentleman with whom I was accidentally in company offered to procure, on an hour's warning, a couple of hundred labourers at fourpence even for temporary employment.’ Inglis, vol. ii. p. 17. The same writer says (vol. i. p. 263), that at Tralee ‘it often happens that the labourers, after working in the canal from five in the morning until eleven in the forenoon, are discharged for the day with the pittance of twopence.’ Compare, in Cloncurry's Recollections, Dublin, 1849, p. 310, a letter from Dr. Doyle written in 1829, describing Ireland as ‘a country where the market is always overstocked with labour, and in which a man's labour is not worth, at an average, more than threepence a day.’

88

It is singular that so acute a thinker as Mr. Kay should, in his otherwise just remarks on the Irish, entirely overlook the effect produced on their wages by the increase of population. Kay's Social Condition of the People, vol. i. pp. 8, 9, 92, 223, 306–324. This is the more observable, because the disadvantages of cheap food have been noticed not only by several common writers, but by the highest of all authorities on population, Mr. Malthus: see the sixth edition of his Essay on Population, vol. i. p. 469, vol. ii. pp. 123, 124, 383, 384. If these things were oftener considered, we should not hear so much about the idleness and levity of the Celtic race; the simple fact being, that the Irish are unwilling to work, not because they are Celts, but because their work is badly paid. When they go abroad, they get good wages, and therefore they become as industrious as any other people. Compare Journal of Statistical Society, vol. vii. p. 24, with Thornton on Over-Population, p. 425; a very valuable work. Even in 1799, it was observed that the Irish as soon as they left their own country became industrious and energetic. See Parliamentary History, vol. xxxiv. p. 222. So, too, in North America, ‘they are most willing to work hard.’ Lyell's Second Visit to the United States, 1849, vol. i. p. 187.

89

By low wages, I mean low reward of labour, which is of course independent both of the cost of labour and of the money-rate of wages.

90

In a recent work of considerable ingenuity (Doubleday's True Law of Population, 1847, pp. 25–29, 69, 78, 123, 124, &c.) it is noticed that countries are more populous when the ordinary food is vegetable than when it is animal; and an attempt is made to explain this on the ground that a poor diet is more favourable to fecundity than a rich one. But though the fact of the greater increase of population is indisputable, there are several reasons for being dissatisfied with Mr. Doubleday's explanation.

1st. That the power of propagation is heightened by poor living, is a proposition which has never been established physiologically; while the observations of travellers and of governments are not sufficiently numerous to establish it statistically.

2nd. Vegetable diet is as generous for a hot country as animal diet is for a cold country; and since we know that, notwithstanding the difference of food and climate, the temperature of the body varies little between the equator and the poles (compare Liebig's Animal Chemistry, p. 19; Holland's Medical Notes, p. 473; Pouillet, Elémens de Physique, vol. i. part i. p. 414; Burdach's Traité de Physiologie, vol. ix. p. 663), we have no reason to believe that there is any other normal variation, but should rather suppose that, in regard to all essential functions, vegetable diet and external heat are equivalent to animal diet and external cold.

3rd. Even conceding, for the sake of argument, that vegetable food increases the procreative power, this would only affect the number of births, and not the density of population; for a greater number of births may be, and often are, remedied by a greater mortality; a point in regard to which Godwin, in trying to refute Malthus, falls into serious error. Godwin on Population, p. 317.