3hap. i. Homo logical Structures, 7 



rnunicate to them, certain diseases, as hydrophobia, variola, the 

 glanders, syphilis, cholera, herpes, &c. ; 3 and this fact proves the 

 close similarity 4 of their tissues and blood, both in minute 

 structure and composition, far more plainly than does their 

 comparison under the best microscope, or by the aid of the best 

 chemical analysis. Monkeys are liable to many of the same non- 

 contagious diseases as we are; thus Eengger, 5 who carefully 

 observed for a long time the Cebus Azarce in its native land, 

 found it liable to catarrh, with the usual symptoms, and which, 

 when often recurrent, led to consumption. These monkeys 

 suffered also from apoplexy, inflammation of the bowels, and 

 cataract in the eye. The younger ones when shedding their 

 milk-teeth often died from fever. Medicines produced the same 

 effect on them as on us. Many kinds of monkeys have a strong 

 taste for tea, coffee, and spirituous liquors : they will also, as I 

 have myself seen, smoke tobacco with pleasure. 6 Brehm asserts 

 that the natives of north-eastern Africa catch the wild baboons 

 by exposing vessels with strong beer, by which they are made 

 drunk. He has seen some of these animals, which he kept in 

 confinement, in tins state ; and he gives a laughable account of 

 their behaviour and strange grimaces. On the following 

 morning they were very cross and dismal ; they held their aching 

 heads with both hands, and wore a most pitiable expression : 

 when beer or wine was offered them, they turned away with 

 disgust, but relished the juice of lemons. 7 An American monkey, 

 an Ateles, after getting drunk on brandy, would never touch it 

 again, and thus was wiser than many men. These trifling facts 

 prove how similar the nerves of taste must be in monkeys and 

 man, and how similarly their whole nervous system is affected. 

 Man is infested with internal parasites, sometimes causing 



3 Dr. W. Lauder Lindsay has tinct fluids by the same chemical 

 treated this subject at some length reagent. 



in the ' Journal of Mental Science,' 5 ' Naturgeschichte der Sauge- 



July 1871 ; and in the ' Edinburgh thieve von Paraguay,' 1830, s. 50. 

 Veterinary Review,' July 1858. 6 The same tastes are common to 



4 A Rev.ewev has criticised some animals much lower in the 

 (' British Quarterly Review,' Oct. scale. Mr. A. Nicols informs me 

 1st, 1871, p. 472) what 1 have here that he kept in Queensland, iu Aus- 

 said with much severity and con- tralia, three individuals of the 

 tempt ; but as I do not use the term Phaseolarctus cmereus ; and that, 

 identity, I cannot see that I am without having been taught in any 

 greatly in error. There appears to way, they acquired a strong taste 

 me a stvong analogy between the fov vum, and for smoking tobacco. 

 6ame infection or contagion, pro- 7 Brehm, 'Thierleben,' B. i. 1864, 

 ducing the same result, or one s. 75, 86. On the Ateles, s. 105. 

 closely similav, in two distinct ani- Fov othev analogous statements, see 

 mals, and the testing of two dis- s. 25, 107. 



