306 : BOTANICAL GAZETTE [APRIL 
embryo and progresses from this region to the inner and outer faces of the coty- 
ledons. Complete greening, however, only follows illumination.—C. R. B 
The nucleus and secretion.—In the nectar glands on the stipules of the Vicia 
Faba, according to STOCKARD,?? the nucleus does not give out granular material 
directly to the cytoplasm, but it transmits a substance which results in the forma- 
tion of granules. Changes which occur in the cytoplasm during secretion seem to 
be controlled by the nucleus—CHARLES J. CHAMBERLAIN. 
Black rot of cabbage.—HarpDING, STEWART, and PrucHa’s find much of the 
cabbage seed in the market contaminated with Pseudomonas campestris, which may 
survive and become a source of infection to seedlings. They advise sterilizing 
seed by soaking for fifteen minutes in HgCl. 1:1000, or in formalin 1:240.— 
C.K, B. 
Movement of diatoms, etc.—Jackson suggests? that the evolution of oxygen 
is the true cause of movements of diatoms, desmids, oscillaria, nostoc, etc. He 
has been able to imitate the movements by those compressed tablets and bits of - 
aluminum of proper shapes which evolve gas—C. R. B 
Anatomy of Claytonia—A study of this genus by THEo. Hot forms one of 
the Memoirs of the National Academy,?5 where it may be overlooked by botanists. 
It contains some of the accumulating details which a master hand must some day 
correlate.— C. R. B. 
Apothecia of lichens —Gertr. P. Wotrr?® through some studies on the 
development of the apothecia in a number of lichens argues against LINDAU’s 
terebrator theory of the function of the trichogynes in lichens——B. M. Davis. 
Intercellular ducts.—The intercellular spaces in the cotyledons of Legumi- 
nosae function at the beginning of germination as conducting canals for aleurone 
which becomes dissolved and diffuses through them.?27—C. R. B. 
Mustiness.—The peculiar musty odor acquired by damp straw or corn is 
due, according to Roussev,?® to the oospora form of oe Dassonvillei 
and not to other of the fungus flora found thereon.—C. R. B 
22STOCKARD, CHAS. R., The structure and cytological aegis aaa RY: 
secretion in the nectar ne of Vicia Faba. Science 21: 204-5. 19 
23H ARDING, H. A., STEwart, F. C., PrucHa, M. J., Vitality of be cba black 
rot germ on cabbage seed. N. Y. Agr. Exp. Sta. Bull. 251: 177-19 05. 
24JacKsoN, D. D., Movements of diatoms and ee microscopic perine Jour. 
Roy. Mic. Soc. 1905: 554-7. 
2SHOLM, THEO., ee a morphological and anatomical study. Mem. Nat. 
Acad. Sci. 10: 27-37. pl. 7 1905. 
26WoLFF, GERTR. P. aa zur Entwicklungsgeschichte der ha awe 
thecien. Flora 95:31. 
27JOFFRIN, H., io BUNT des méats intercellulaires pees les cotylédons 
des Légumineuses au début de la germination. Rev. Gén. Bot. 17 : 421-2. 1905- 
28BrocQ-RovssEv, Contributions a l’étude des causes qui provoquent l’odeur de 
moisi des grains et fourrages. Rev. Gén. Bot. 17: 417-420. 1905. 
nm 
Sincere crcanesrticicenns 
—— 
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