438 The Botanical Gazette. ° [November, 
4 
generally in the fungi, a strand passing through a simple central pore. — 
He contests emphatically the presence of plasmic threads in the alge, _ 
i Opposition to Kohl. As to the division of the cells of alge he re 
pudiates the common theory of the origin of the transverse wall asan _ 
annular thickening and revives the old “box” theory, holding it to be . 
formed as a true annular fold, following the contour of the shrinking 
protoplasm. : a 
STAHL’s well known researches on the protective function of oxalic 
Tannin seems to serve as a protection when oxalic acid pee 7 
His anatomical studies are complemented by experiments with snal 
and plant lice. a 
THE Bulletin of the Torrey Botanical Club for September eee : 
the following papers read before the botanical section at the Ma oe 4 
meeting: W2/iams on Lichens of the Black Hills and their 7 
Photography as an instrument for recording the microns rossing 
ters of micro-organisms in artificial cultures; and Pamme/on 4 
ae | 
genus is very appropriately dedicated to Dr. Charles pron rest trees | 
The three species, therefore, stand as Mohria Carolina (Halesia F 
: es 
‘THE REINHOLD-GiLTay microtome, a machine meg one ! 
construction, but adapted to the finest work, 1s descri 
Moll in the Zeits. f. wiss Mikros. 1x (1892). 445-465- 
Be Tay Raa erigsaer g Bot. Cent. LV! (1893) 55 
*Jenaische Zeits. f. Naturwiss. xxv (1893). 344-—PO! o 
