1995] CURRENT LITERATURE 465 
_ Bettevinc that insufficient attention has been given to the higher fungi as 
acause of disease in animals, Gu&GUEN® has compiled a volume containing 
descriptions of all fungi which have been reported parasitic on man and other 
“ani The material, including the Myxomycetes, is arranged in the following 
order: Myxomycetes, Oomycetes, Basidiomycetes, Ascomycetes, and Fungi 
Imperfecti. ‘To the description of each species are added notes on the pathology 
of the organism so far as known. All fungi that have been reported on animals, 
~ even the lowest, are included. Full references to literature are given at the end 
‘ofeach chapter. The volume as a whole will be of greater interest to patholo- 
gists than to botanists—H. HAssELBRING. 
_ Hatrrer'? has published a résumé of the more important features of his 
_ ‘Matural system of classification't with some corrections and additions, which 
are here noted. he Hydnoraceae and Balanophoraceae are held to be derived 
through parasitism from epiphytic Cactaceae; the Gnetaceae do not belong to 
~The gymnosperms, but are reduction forms near the Loranthaceae, Myzoden- 
draceae and Santalaceae; and Casuarina is nearly related to Betula and Alnus.— 
C.J. CHAMBERLAIN. 
NOTES FOR STUDENTS. 
In A Norr in the Comptes Rendus,'? R&nfé MAIRE summarized the results 
ofhis cytological study of the mitosis in the ascus of Galactinia succosa, describing 
_ the existence of “protochromosomes,” or chromatic granules formed during the 
Prophases of the first division, and which united during the metaphase into the 
four chromosomes of the equatorial plate. In a more recent publication,’ 
upon a more detailed study of Galactinia as well as several other Ascomy- 
fetes, Marre has endeavored to explain the significance of the cio le eo 
and to recognize certain specific characters of the first division in the ascus. : 
. believes this division to be heterotypic, comparable to the heterotypic division 0 
"higher plants. ‘The secondary nucleus of the ascus at the time of its greatest 
Shows long, fine, much intermixed chromatic filaments, which have been a 
| -‘Nished to it by the two primary nuclei. Later these chromatic filaments rae 
and fuse two and two. It has been impossible to determine whether or - t 4 
__ bivalence is a result of a folding of a single thread or of the union of two d eren 
e filaments. At this time the filaments are collected to one side of the nucleus aa 
fompact synaptic ball, which later undergoes complete dissolution oe . i 
“atic granules or protochromosomes. At the time the centrosomes 
: animaux. 8vo. 
°GufcueEN, F., Les champignons parasites de homme et des 
~ PP. 299. pis. ro. Paris: A. Joanin & Cie. 1904. 20ff- : 
® Hariier, H., Neue anaes auf das natiirliche System der Dikotyledonen. 
Phylogenetische Betrachtungen. Imp. 8vo. pp- 15- 
: ™ Bor. GAzetrE 35:223- 1903- 
- *Compt. Rend. Acad. Sci. Paris 137:769- 1993 
"3S Marre, R&éné, Recherches cytologiques sur 
| quelques Ascomycétes. Ann. 
; Mycol. 3°123-154. pls. A ame 2 1905. : 
