CURRENT LITERATURE 241 
“tgoa] 
Prowazek.” Of special interest is his account of a nuclear centrosome some- 
_ ‘What similar to that described for Euglena and some other flagellates. A 
minute body makes its appearance in the nucleus, moves to the periphery, 
and is thrown out, surrounded by a clear area of protoplasm. The body then 
divides and the daughter centrosomes, taking position at opposite ends of the 
_ Slongated nucleus, become the poles of the spindle.— B. M. Davis. 
‘ITEMS OF TAXONOMIC INTEREST are as follows: CARL PURDY (Proc. 
Acad. Sci. III. Bot. 2: 107-150. pés. 15-s0: 1901) has published a 
“revision of Calochortus, not including the Mexican species. He recognizes 40 
> pa 5 as new.—T. D. A. CocKERELL (Torreya 1: 3142-143. 
i 
hewtofore referred to Mentzelia. Under this new (sagen name g species 
we placed.—J.C. ArTHUR (Bull. Torr. Bot. Club 28:661-666. Igo!) has 
oe of publications entitled ““ New species 2 Uredineae,” the first 
_ Mastallment containing 12.—ALice Eastwoop (idem, 667-674) in publishing 
: i on Californian species of De/phinium has described 4 new species. 
a: W. Mout » has devised an apparatus for focusing the projecting 
obra a ‘mea In order to give the demonstrator at the s screen 
aiding the ocular in and out. ‘The ocular is Sued to 
k and is entirely independent of the part carrying the. — 
» attached to the front of the ocular carrier, passes around a 
i _ Two stout spiral springs i in front of the ocular carrier 
cokes the tension of the cord is relaxed. The arrange- — 
€monstrator to control the focusing from any position — 
G, Lanp. - 
= published in a recent number of Pringsheim’s lee ae 
‘ nig pa influence of various conditions on the respiration of 
: It appears that when the fungus is deprived of food 
. : Promptly diminishes. Growth is suspended at the same 
: coemeaed und Vermehrung der Polytoma. ester, Bot. Ze its. 
s 
msterdam 4: 95-Io1. 1 pl. 1901. 
oh Athmung bei Hungerzustanden und unter Sinwishune 
nd ‘mischen pont ag ae Aspergillus niger. Bait 
