1904] CURRENT LITERATURE 229 
His most important conclusions are that both the absorption of oxygen and the 
excretion of carbon dioxid in the respiratory process are at least partially effected 
by the activity of specific enzymes; and that the excretion of carbon dioxid when 
free oxygen is excluded is occasioned by the activity of an enzyme which is not 
identical with the zymase of BUCHNER. 
Maximow?? studied the behavior of the liquor expressed from the mycelium 
of Aspergillus niger, and obtained the important result that this liquor on standing 
exhibits a gas metabolism analogous to respiration. This exchange of gases 
occurs as a Consequence of the activity of enzymes present in the liquor. The 
excretion of carbon dioxid is accomplished by an enzyme analogous to zymase, 
while the absorption of oxygen is induced by one of the oxydases. The former 
enzyme analogous to zymase also resembles zymase in being equally active in 
air or in hydrogen.—R. H. Ponp. 
SABLINE”* subjected roots of Vicia Faba to different temperatures; to lack of 
oxygen; to the action of saccharose, distilled water, sulfuric ether, quinin sulfate, 
and lithium chlorid, in order to determine the effect of various conditions on 
karyokinesis. Few divisions were found in roots subjected to o° C. The linin 
Was coarse-meshed and the chromatin stained blue. At 10° growth was slow 
and chromosomes blue. At 30°, the optimum temperature, the nucleoli did not 
wy large and stained red, and nucleoli were enormous. There were no mitoses 
in cells placed in distilled water. Amitosis was frequent in nuclei subjected to 
. Lithium chlorid caused the chromosomes to 
become abnormally large and the stain was red.—W. J. G. LAND 
The mulus which causes the primary movement, is strongly supported. 
——_Prophecy of Frrrinc that the “double curve” expressing the twice accel- 
27 Max 
Ber Deutsch Ow, N. A., Zur Frage iiber die Atmung. (Vorlaufige Mitteilung). 
ae - Bot. Gesells. 22: 225-235. fig. I. 1904. 
Facines de a V., L’influence des agents externes sur la division des noyaux dans les 
‘1a Faba. Rey. Gén. Bot. 15:481-497. pls. 15, 16. 1903. 
tngen, J ean > W., Studien tiber photonastische und thermonastische Beweg- 
* Wiss. Bot. 40: 230-278. figs. 20. 1904. 
