M. Boedeker's Analyses of Cow's Milk. 457 



a green colour. After some time, crystals of anilotinic acid 

 separate. Salicine exposed to the action of nitric acid of the 

 same strength in an open vessel is only converted into helicine. 

 Anilotinic acid has the same composition as nitrosalicylic acid, 

 HO,Ci'* H^NO^and the crystallized acidHO,Ci4H4N03 + 3HO. 

 It has also great similarity in many of its properties. But it 

 differs from nitrosalicylic acid in its solubility in boiling water, 

 and in the salts which it forms with potash, ammonia, and silver. 



Neubauer has examined the volatile acid which occurs in the 

 fermentation of diabetic urine. He found that acetic was the only 

 acid formed. Experiments which he made to procure the taurylic 

 acid found by Stadeler in fresh normal urine, gave an unfavour- 

 able result : phenylic and acetic acids were the only volatile acids 

 which he obtained. 



Laugenbeck and Stadeler investigated the action of the copper 

 salts of the fatty acids on the organism. They found that solu- 

 tion of oxide of copper in fats, as well as the copper salts of fatty 

 acids of high atomic weight, and especially of stearic and oleic 

 acids, ha\e an injurious action on the system, causing vomiting 

 and diarrhoea ; but that this action, even in large doses, is not 

 fatal. The copper salts of volatile fatty acids act, on the other hand, 

 as strong poisons, and their action is the more marked the lower 

 the atomic weight of the acid. Acetate of copper has a very 

 poisonous action, which is delayed, but not prevented by a quan- 

 tity of admixed fats. 



Soluble copper salts are decomposed by solution of soap into 

 insobible stearate and oleate of copper; but in the organism this 

 change is not sufficiently rapid to hinder the poisonous action. 

 Solution of soap is nevertheless the most appropriate antidote, 

 as the vomiting is not prevented. It is best to add to it a small 

 quantity of oil, to prevent the injurious action of the soap on the 

 mucous membi'ane of the stomach. 



Laugenbeck and Stadeler found that in these experiments the 

 copper was more particularly found in the liver, whence it passes 

 into the bile, and with this reaches the intestinal canal and is 

 removed from the system. 



Bcedeker made a series of analyses of cow's milk taken at the 

 various periods of the day in order. The times selected were the 

 morning at 4 o'clock, noon at VZ o'clock, and evening at 7 

 o'clock. From these analyses, it appears that the increase of fat 

 in the milk from morning to evening is so considerable that the 

 total quantity of solid substances in the evening milk amounts 

 to one-third more than in the morning milk. The quantity of 

 buuter in the evening milk is more than double that of the 

 morning. 



Phil. Mag. S. 4. Vol. 1 1. No. 74. June 1856. 2 H 



