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1904] CURRENT LITERATURE I51 
not only by the few new species, but chiefly by the numerous varieties, especially 
in Alnus.— S 
To accompany his secondary school text-books, which imply a considerable 
amount of laboratory work in botany. Mr. J. Y. BERGEN has prepared a Notle- 
book,’ in which he has arranged directions for experiments, chiefly physiological, 
with various useful suggestions to the student, intending thereby to promote 
neat and thorough reports of the work. Most teachers will prefer the loose-leaf 
notebook, which permits criticism and correction without permanently marring 
the record. The laboratory directions of course minimize dictation and copying, 
but the forms also curtail freedom and initiative which it is equally important 
to cultivate —C. B. 
Miss Perxrys? has published the second fascicle of her contributions to the 
flora of the Philippine Islands. Numerous families are represented more or less 
extensively, the more important contributions dealing with Marantaceae, Legum- 
inosae (9 n. spp.), the genus Canarium (Burseraceae) with 14 new species, Tilia- 
ceae (g n. spp.), Sterculiaceae (5 n. spp.), Asclepiadaceae (by R. SCHLECHTER 
and O. WarsBuRG) with 24 new species and a new genus che poet and 
Gramineae (by C. Mrz and R. PrLcEr) with 4 new species.—J. M. C 
THE SIXTH FASCICLE of Roth’s Europdischen Laubmoose’° begins the Bryaceae, 
describing, with the help of ten plates, 21 species of Webera, 108 of Bryum, and 
13 of other genera. The seventh fascicle completes the Bryaceae, Mniaceae, 
Meeseaceae, Aulacomniaceae, Bartramiaceae, Timmiaceae, and begins the 
Polytrichaceae. The ten plates, however, are almost wholly devoted to Brya- 
ceae.—C.. R. B. 
MAIpDEN,"' in the fourth part of his revision of Eucalyptus, presents E. incras- 
sata Labillardi*re and E. foecunda Schauer, the description in each case being 
followed by discussion of synonymy, range, and affinities—J. M. C. 
NOTES FOR STUDENTS. 
PoRODKO, as a result of his researches on the oxidases,’ concludes that they 
probably do not take part in the process of respiration. He also contributes 
some facts to the technique of the guaiac reaction.—C. R. B. 
5 BERGEN, J. Y., Notebook to accompany Bergen’s text-books of botany or - 
general use in botanical —— of secondary schools. 4to. pp. 144- Boston 
Ginn & Co. 904. 75. 
9 Perkins, J., sma florae sear oe Fasciculus II. pp. 67-152. pis. 
1-3. Leipzig: Gebriider Borntraeger. 1904. 
‘© Roru, Grorc, Die europaischen Laubmoose. 2 Band. 6 Lieferung. Imp. 
8vo. pp. 1-128. pls. 1-10. 7 Lieferung. pp. 129-256. pls. 11-20. Leipzig: Wilhelm 
sects 1904. Each M 4. (Parts not sold singly.) 
‘Maren, J. H., A critical revision of the genus Eucalyptus. Part IV. pp- 
93-124. pls. 13-24. Government of New South Wales: 1904. 
'* Poropko, T., Zur Kenntniss der pflanzlichen Oxidases. Beihefte Bot. Cent. 
16:1-10. 1904. 
