112 EXPERIMENT STATION RECOED. 



The structure of the soy bean, T. E. Wallis {Pliarm. Jour. [London], 4- ser., 

 37 (1913), No. 2597, pp. 120-123, figs. 7).— A description, with illustrations, of 

 the microscopical anatomy of the soy bean. 



About the presence of nitrogen-containing substances in the germinating 

 seeds of Vicia faba, T. Torquati {Arch. Farmacol. Sper. e Sci. Aff., 1.5 {1913), 

 No. 5, pp. 213-223; ahs. in Chem. Ztg., 37 {1913), No. 45, p. ^56).— From an 

 aqueous extract of the horse bean {V. faba) with lead subacetate a crystalline 

 substance was obtained which yielded with ferric chlorid an emerald-green 

 solution. In a slightly alkaline solution the coloration obtained was violet. 

 The substance was almost insoluble in cold water and in the usual organic 

 solvents, but at 40 to 45° C. it was soluble in both water and alcohol. It had 

 M reducing action, and when exposed to air or oxidizing substances was 

 unstable. Lassaigne's reaction showed the substance to be of a nitrogenous 

 nature, and from the elementary analysis the formula CnHisNOs could be 

 assigned to it. 



Denitrification as a result of enzyni action, W. HtrLME {Abs. in Chem. Ztg., 

 37 {1913), No. 73, p. 73S). — Tbe tests were conducted in bouillon and fluorescent 

 denitrifying organisms. The results seem to indicate that the denitrification 

 process is due to euzyms._ 



Studies on the specific nature of the intracellular enzyms by means of the 

 optical method, I, E.. Abderhalden and A. Fodor {Hoppe-Seyler's Ztschr. 

 Physiol. Chem., 87 {1913), No. 3, pp. 220-224; «&«• in Jour. Chem. Sac. [London^, 

 104 {1913), No. 612, I, p. 1118). — Juices of various tissues deprived of blood 

 were tested against the peptone obtained from the same tissues. Liver juice 

 hydrolyzed liver peptone but had no action on kidney or thyroid peptone. 

 Kidney juice hydrolyzed both kidney and liver peptones and in one out of three 

 cases acted upon thyroid peptone. Thyroid juice hydrolyzed only thyroid 

 peptone. 



Specific nature of the intracellular enzyms studied by raeans of the optical 

 method, II, E. Abderhalden and E. Schiff {Hoppe-Seyler's Ztschr. Physiol. 

 Chem., 87 {1913), No. 3, pp. 231, 232; ahs. in Jour. Chem. Soc. ILondon], 104 

 {1913), No. 612, I, p. 1118). — The enzyms of the muscle juice of the horse were 

 found to hydrolyze muscle peptone but not liver or brain peptone. The 

 enzyms of the testicle and kidney hydrolyze testicle peptone, while brain pep- 

 tone is hydrolyzed only by brain and kidney juices. 



The speed with which protective enzyms appear after the repeated injec- 

 tion of the foreign svibstratum, I, E. Abderhalden and E. Schiff {Hoppe- 

 Seylcr's Ztschr. Physiol. Chem., 87 (1913), No. 3, pp. 225-230; abs. in Jour. 

 Chem. Soc. [London], 104 {1913), No. 612, I, pp. 1117, iiiS).— While it takes 

 some time for protective enzyms to appear after the intravenous injection of 

 a foreign peptone into the blood stream, the ferments appear in a very much 

 shorter time if a second injection is made after the serum has become inactive. 



The experiments were made with silk and gelatin peptones. 



A study of the methods of estimation of carbohydrates, especially in plant 

 extracts. — A new method for the estimation of maltose in presence of other 

 sugars, W. A. Davis and A. J. Daish {Jour. Agr. Scl. [England], 5 {1913), No. 

 4, pp. 437-468, figs. 2). — In the estimation of mixed sugars in plant extracts, the 

 most satisfactory procedure was the gravimetric method, following the speci- 

 fications of Brown, Morris, and Millar and using the tables prepared by them. 



The tables were tested for their accuracy' by means of carefully purified 

 specimens of dextrose, levulose, cane sugar, and maltose. " Large errors in 

 the gravimetric method may be obtained unless special care is taken in purify- 

 ing the asbestos by boiling for at least 30 minutes with 20 per cent sodium 



