No. 1, July, 1920] PHYSIOLOGY 223 



1470. SUGITJRA, K., amiS. R. I. DICT. The nutritive value of the banana. Jour. Biol. 

 ( Ihem. 40: i!'.» 168. L919. -The experiments performed suggest thai ban ad milk in 



proper proportion constitute a complete food for albino rats.— 0. B. Rigg. 



1477. Tdn Boi ra Db LaNOB, W. G., Jb. Rubberproductie-Kroramen. [Rubber pro- 

 duction curves.] Arch. Rubberoult. Nederlandsch-Indle 2 : L05 ill. 1918. — & Ahste. 

 :;, Entry 2080. 



1 ITS. Trtjoq, I'.mii., ami M. U. MbaCHAM, Soil acidity: II. Its relation to the acidity of 

 the plant juices. Soil Sci. 7: 169 174. 1919. -See Bot. Absts. 1, Entry 1659. 



1-171). V\ '\u k, IIakoi.d. A fluorescent colouring matter from Leptonia incana Gill. Trans. 

 British Mycol. Soc. 6: 158-164. 1919.— See Bot. Absts. I, Entry 1178. 



1 ISO. Wei mi \<;i.\, Albert B. Beitrage zur Muscarin-Frage. I Mitteil. Zur Kenntnls 

 der Platindoppelsalz einiger Basen. [The muscarine problem; the platinum double salts of 

 certain bases.] Zeitschr. Physiol. Chem. 105: 249-257. 1919. 



1481. White, H. L. The modification of the composition of vegetable oils, with special 

 reference to increasing unsaturatlon. Jour. Indust. Eng. Chem. 11 : 648-051. 1919. — The proc- 

 esses of germination and growth of soy beans up to a height of 8 to 12 cm., even under favor- 

 able conditions of growth, do not result in an increase of unsaturated acids in the ether extract 

 from such plants. The effect of heat, light, enzymes, and salts of some metals on the degree 

 of unsaturation of vegetable oils is also dealt with. — Henry Schmitz. 



14S2. Willaman, J. J., R. M. West, D. O. Spriestersbach, and G. E. Holm. Notes 

 on the composition of the sorghum plant. Jour. Agric. Res. 18: 1-33. 1919. — Three varieties 

 of sorghum cane were used. A continual increase in dry matter up to maturity was found ; 

 also a decrease in crude fiber at the same rate that soluble carbohydrates increase. The per- 

 centages of fat, ash, and protein remain constant throughout the period of growth studied. 

 — The data indicate that the plant builds up in the earlier part of the season its cellular struc- 

 ture of fiber, protein, and mineral matter, and that these tissues are filled with carbohydrates 

 in the later stages of growth. — There is no evidence that the leaves are deprived of carbohy- 

 drates to supply the stalk. In the juice, galactan, pentosans, and mineral matter (largely 

 calcium, potassium, and magnesium) occur. Such organic acids as aconitic, malic, citric, 

 tartaric, and oxalic were found in the juice. Amid nitrogen was also high in the sorghum 

 juice, other juice constituents were 1-leucin, d-1-asparagin, glutamin, cystin, and aspartic 

 acid. — "The middle joints of the cane are higher in total sugars but lower in dextrose and 

 in levulose than the upper and lower joints." The sorghums grown in the northern regions 

 are lower in sugars than in the southern, warmer regions. — J. M. Brannon. 



1483. Winterstein, E. tjber das Vicin. I Mitteil. [Vicin.] Zeitschr. Physiol. Chem. 

 105:258-264. 1919. 



1484. Zeller, S. M., and Henry Schmitz. Studies in the physiology of the fungi. VIII. 

 Mixed Cultures. Ann. Missouri Bot. Gard. 6: 183-192. PI. 4- 1919.— Mixed cultures of sev- 

 eral Basidiomycetes and Hyphomycetes were grown upon potato agar plates and observations 

 made upon their ability to inhibit or stimulate the growth of one another. The fungi were 

 also grown separately on a nutrient solution containing the same ingredients as the agar. 

 Some of the observations lead to the following conclusions: (1) There is no definite relation 

 between the active acidity produced by the fungi and the inhibition and stimulation of growth. 

 (2) In some cases, at least, inhibition of growth is due to depletion of carbohydrate. (3) 

 The tendency of growth away from "staled" media is more probable than growth toward dif- 

 fusion centers. — S. M. Zeller. 



1485. Zerban, F. W. The color changes of sugar cane and the nature of cane tannin. 

 Jour. Indust. Eng. Chem. 11: 1034-1036. 1919.— The polyphenol of the sugar cane giving a 



