xciv GENERAL SUMMARY OF SCIENTIFIC AND 



its conveners arc combinations of urea or ofoxarnide with 

 cither saturated or non- saturated amic acids belonging to 

 well-known series. 



Boussingault has made analyses of gluten biscuit, with 

 comparative analyses of other similar articles of food, with 

 a view of showing its real value when used as food in cases 

 of glycosuria. From his table it appears, for example, that 

 73 pounds of baker's bread introduces as much starch into 

 the system as 100 pounds of the gluten biscuit, while the 

 latter affords eisrht times as much albuminates. 



Maly has published a paper on the chemical composition 

 and the physiological importance of the peptones. 



Epstein and Mtiller have sought to throw some light on 

 the beneficial effect of phenol on glycosuria by ascertaining 

 whether phenol prevented at all the action of the liver fer- 

 ment on the glycogen. Their results were negative. Acids 

 suspend the action of this ferment, while alkalies simply 

 lessen it. 



Thudichum has published an extended memoir on biliru- 

 bin and its compounds, in which he maintains that the trans- 

 formation claimed by Maly of this substance into ufochrome 

 has not yet been effected. 



ScolosubofF has determined that the principal localization 

 of arsenic in animals poisoned with this substance is in the 

 nerve tissue. Hence, in all cases of acute poisoning, the 

 brain should especially be examined, since, when the case is 

 a very rapid one, even the liver may not contain a detectable 

 amount of this poison. 



TECHNICAL CHEMISTRY. 



In Technical Chemistry, Stierlien has given a method for 

 the detection of the artificial coloring matters used in red 

 wines, together with the results of his examination by it. In 

 these wines he finds logwood, Brazil-wood, red poppy, mal- 

 low, blueberry, cherry, elderberry, cochineal, litmus, aniline 

 red, and red beet. 



Fordos has published an additional paper on the action of 

 liquids, used for food or medicinally, upon the so-called tin 

 lining of utensils which contain lead. He shows that the del- 

 eterious results of the use of such vessels are far more cren- 

 eral than is supposed. 



