No. 4, February, 1922] PHYSIOLOGY 299 



1940. Kraemrr, Henhy. Some experiments on the modification of color in plants. Amer. 

 Jour. Pharm. 93: 410-418. 1921. — There are reported briefly some experiments conducted 

 nearly 10 years ago dealing with the modification of color in plants. — Anton Hogstad, Jr. 



1941. Peters, R. A. Nutrition of the protozoa. Jour. Physiol. 54: 1-li. 1920. — Am- 

 monium glycerophosphate served as a complete source of carbon, nitrogen, and phosphorus 

 for Colpidium. Ammonium salts will furnish the nitrogen. As sources of carbon the fol- 

 lowing gave no growth: carbonate, formate, oxalate, glycollate, and citrate; while glycerate, 

 glycerophosphate, tartrate, glucose plus lactate, and leucine (synthetic) gave growth as 

 measured by capability of carrying through 3^ subcultures. The organism is not dependent 

 upon complicated bodies for its growth and is widely tolerant of the ratio between potassium 

 and calcium salts. — Ernest Shaw Reynolds. 



1942. Saxdo, Charles E., and H. H. Bartlett. Occurrence of quercetin in Emerson's 

 brown-husked type of maize [seeBot. Absts. 10, Entry 528]. Jour. Agric. Res. 22: 1-4. 1921. — 

 The brown husks contain quercetin and a quercetin glucoside; both are lemon yellow in color. 

 If they account for the truly brown color of the husks it must be through their tinctorial 

 quality. The quercitin glucoside of the brown type probably is the counterpart of antho- 

 cyanin of the purple type. It is predicted that the pigment of the latter type will be allied 

 to cyan in. — D. Reddick. 



1943. Steenbock, H., Mariaxa T. Sell, and P. W. Boutwell. Fat-soluble vitamine. 

 VIII. The fat-soluble vitamine content of peas in relation to their pigmentation. Jour. Biol. 

 Chem. 47: 303-308. 1921. — In ripe peas, out of 6 samples investigated, those of green color 

 and carrying also considerable yellow pigment, were far richer in fat-soluble vitamin than 

 yellow peas which contained much less yellow pigment. — G. B. Rigg. 



1944. Stebnbock, H., Mariana T. Sell, and Mary Buell. Fat-soluble vitamine. 

 VII. The fat-soluble vitamine and yellow pigmentation in animal fats with some observations 

 on its stability to saponification. Jour. Biol. Chem. 47: 89-109. 1921. — In general butters 

 highly pigmented are rich in the vitamin, though the parallel is not close. In beef fats the 

 relations are somewhat similar. In cod-liver oil there is high content of fat-soluble vitamin 

 with low content of yellow pigments. The fat-soluble vitamin withstands severe methods 

 of saponification, hence is not a fat and probably not an ether. — G. B. Rigg. 



1945. Verkade, p. E., und N. L. Sohngen. Die Angriefbarkeit von cis-transisomeren 

 ungesattigten Sauren durch Pilze. [The capacity of cis- and transisomers of unsaturated 

 acids to be utilized by fungi.] Centralbl. Bakt. II Abt. 50 : 81-87, 1920. — The organisms used 

 were Aspergillus niger and Penicillium glaucian. The culture medium was tap water with 

 the addition of the following, ex-pressed in per cent: 0.05 KHjPO^, 0.05 MgS04, 0.01 FeCla, 

 0.01 MnS04, and 0.05 (NH4)2S04 or 0.05 KNO3. The source of nitrogen made no difference in 

 the results* Experiments were carried out with the calcium salts of 20 acids of the oleic 

 series. The results given show no uniformity of utilization, hence no definite conclusion 

 can be drawn. H-ion detenninations were made, also the relative solubilities in water and 

 olive oil were determined. A table showing solubilities and distribution coefficients is given. 

 A brief report of the literature is included. — Grace E. Houard. 



1946. Woodard, J. Determination of biological fluids. [Rev. of: Duggar, B. M., and 

 C. W. Dodge. The use of the colorimeter in the indicator method of H-ion determination 

 with biological fluids. Ann. Missouri Bot. Card. 6: 01-70. Fig. 1. 1919 (see Bot. Absts. 4, 

 Entry 1449).] Bot. Gaz. 69: 269-270. 1920. 



METABOLISM (NITROGEN RELATIONS) 



1947. Boas, S. Selbstvergiftung bei Aspergillus niger. [Self-poisoning of Aspergillus 

 niger.] Ber. Deutsch. Bot. Ges. 37: 03-65. 1019. — This paper is an account of another case 

 of self-poisoning as the result of the production of large quantities of ammonia from urea 



