No. 2, June, 1921] PHYSIOLOGY 215 



1486. Satava, Jan. Alcoholic fermentation in sugar juices. Sugar 22:196-198. Fig. 

 1-4. 1920. — [Translated from the report of the Bohemian Technical High School, Prague, 

 by R V. Keller.] Several strains or species of the genus Z ygosaccharomyces, closely related 

 to Z. Barkeri, are capable of fermenting concentrated solutions of sugar. The fermentation 

 produced is rather vigorous, though the amount of alcohol produced is not large. In one 

 experiment using a 65 per cent sugar solution, 2.69 per cent of alcohol was obtained. — C. W. 

 Edgerton. 



1487. Wester, D. H. Ureasegehalt von hoUandischen Samen und von verschiedenen 

 Arten Soyabohnen. [Urease content of Dutch seeds and of different kinds of soy beans.] 

 Pharm. Zentralhalle 61: 377-382. 1920. — A great number of seeds of plants growing in Hol- 

 land and the Dutch possessions were e.xamined. The seeds of Cytisus have a high urea 

 number. In seeds of different species of the same genus the urea number varies considerably 

 in such genera as Geranium, Trifolium, Vicia, and Phaseolus for instance. In Vicia hir- 

 suta, V. cracca, V. villosa, V. angustifolia, and V. sativa no urease was present, while in V. 

 silvatica there was a high urea number. Urease was present in all the different kinds of soy- 

 beans, as found by the examination of 48 species. Very remarkable was the fact that beans 

 which had been kept for 17 and 31 years still exerted a strong urease action. — H. Engelhardt. 



METABOLISM (RESPIRATION) 



1488. Haggard, H. VV., and Y. Henderson. Hemato-respiratory functions. VII. The 

 reversible alterations of the H2CO3: NaHCOa equilibrium in blood and plasma under varia- 

 tions in CO2 tension and their mechanism. Jour. Biol. Chem. 45: 189-198. 1 fig. 1920. — 

 Hemoglobin plays almost as large a part in the transportation of CO2 as it does in that of 

 oxygen, though it does not itself combine directly with CO2 to any great extent. — G. B. Rigg. 



ORGANISM AS A WHOLE 



1489. Brandt, K. tJber den StofifwechselimMeere. [Metabolism in the sea.] Schriften 

 Naturwiss. Ver. Schleswig-Holstein 17: 193-194. 1920. — A report is given here of a lecture 

 on the periodicity of the plankton algae, especially the diatoms. Definite relations are 

 shown to exist between the abundance of these organisms and the amount of certain nutritive 

 substances present in the sea. — A. W. Evans. 



1490. KtJsTER, E. Der Rhythmus im Leben der Pflanze. [Rhythm in the life of the 

 plant.] Ber. Senckenberg. Naturf. Ges. Frankfurt a. M. 47: 69. 1919.— In this report of a 

 lecture delivered in February, 1916, various periodic processes in plants are ascribed, wholly 

 or very largely, to an autonomous rhythm inherent in the organism. Among these processes 

 the following are included: Alternation of growing and resting periods, alternation of day and 

 night positions in many leaves and flowers, the formation of fairy rings by molds, and the 

 development of annual rings in woody plants. — A. W. Evans. 



1491. Rogers, J. B. Studies on the viability of the tubercle bacillus. Amer. Jour. Pub- 

 lic Health 10: 345-347. 1920. — The author describes experiments which go to show that the 

 tubercle bacilli in the dust of hospital wards and in morgues are viable and infective. — C. A. 

 Ludwig. 



1492. TuBEUF. Absterben der UlmenSste im Sommer 1920. [Dying-off of the branches 

 of the elm in the summer of 1920.] Naturw. Zeitschr. Forst- u. Landw. 18: 228-230. 1920.— 

 This phenomenon was observed to an equal extent in 1918, and is due to the habit, charac- 

 teristic of the elm, of flowering very abundantly every 2nd or 3rd year. The blossoms appear 

 before the foliage in the spring, and, although the green fruits may temporarily act as leaves 

 before becoming ripe, they deprive the leaf buds of their required nourishment, and, as often 

 happens, the foliage never develops so that the branches, after the fruit drops, are bare. 

 Twigs and branches remain green just as long as they bear foliage, — if the foliage does not 

 develop, the branches die off, or die back to the outermost foliage. — /. Roeser. 



