458 APPENDIX. 



on the sweat both Schottin and myself failed in detecting it either 

 in the healthy or morbid fluid. Robin and Verdeil * have recently 

 found lactate of lime in large quantity in the urine of the horse, 

 and Lassaignef believes that he has found lactate of soda in the 

 allantoic fluid of a calf. 



(10) Addition to p. 116, line 22. [Damaluric and damoleic 

 acids must be added to the oily fatty acids mentioned in the text. 

 They were discovered by Stadeler. G. E. D.] 



Damaluric acid (C 14 H n O 3 .HO) was found together with damo- 

 leic acid amongst the products of distillation of cows' urine treated 

 with hydrochloric acid ; it is an oily fluid with a peculiar odour, not 

 unlike that of valerianic acid, is somewhat heavier than water, in 

 which it is slightly soluble, reddened litmus powerfully, and yields 

 a white precipitate with basic acetate of lead, which under the 

 microscope appears crystalline. Its silver-salt is not affected by 

 light; its baryta-salt is cry stalli sable, soluble in water, renders 

 turmeric paper brown, does not fuse when heated, and leaves, 

 after smouldering, carbonate of baryta in the form of the original 

 salt. 



Damoleic acid (C 26 H 23 O 3 ) occurs with damaluric acid amongst 

 the volatile acids of cows' urine ;J it is fluid, heavier than water, in 

 which it is only slightly soluble, reddens litmus, and forms a cry- 

 stallisable salt with baryta, which, however, fuses on the application 

 of heat. 



(11) Addition to p. 124, line 10. F. Kunde ascertained while 

 working in my laboratory, that oleic acid, and likewise certain 

 ethereal oils possess the property of producing the same colour 

 with concentrated sulphuric acid and a little sugar as cholic acid 

 and its conjugated compounds ; and Schultze || has independently 

 arrived at the same result. I am not, however, inclined to believe 

 from my own observations that there is much probability of any 

 mistake arising from this circumstance, since olein and oleic acid 

 when mixed with sulphuric acid and sugar only slowly gave rise to 

 this coloration, the process being dependent on an absorption of 



* Me'm. de la Socie'te' de Biologie. T. 1, p. 25. 



t Ann. de China, et de Phys. I860. T. 17, p. 295. 



$ Nachr. d. Ges. d. Wiss. z. Gottingen. 1850, S. 233-243. 



Dissert, inaug. Berol. 1850. 



Ann. d. Ch. u. Pharm. Bd. 71, S. 266-277. 



