CURRENT LITERATURE 225 
MINOR NOTICES. 
THE TENTH AND ELEVENTH parts of RorH’s+ Die européischen Laubmoose 
complete the second volume and the work. Supplements to both volumes and 
indexes to accepted names and synonyms in the second volume make up the 
larger portion of the eleventh part. The four indexes (two in the first volume) 
should have been combined into one for convenience, though we are thankful 
for full indexing of any kind. The author and publisher deserve special com- 
mendation for the promptness with which the work has been issued. The book 
will be almost as useful to American as to European bryologists, and the total 
price, 44 marks, for a work with 62 plates and nearly 1400 pages is cen 
very reasonable.—C. R. B. 
Major Squier,’ of the Signal Corps, U. S. A., in experimenting with field 
Wireless telegraphy, has incidentally paid some attention to the conductivity 
and electromotive force of live trees. Being, naturally enough, unfamiliar with 
the literature, he has rediscovered a number of well-known phenomena and raises 
Some questions which have already been investigated. The discharge of a 
powerful induction coil and Leyden jars through live-plant electrodes, and the 
so-called ‘“‘floral spectra” with lines of carbon, nitrogen, sodium, etc., are more 
novel than valuable.—C. R. B 
Die Pflanzenjamilien drags on, the sections on mosses and lichens not yet 
being complete. The former are being elaborated by BRoTHERUS.® The last 
two parts to appear (219, 220) treat the remainder of the Bryaceae, the mono- 
typic Leptostomaceae, Mniaceae (72 spp.) Rhizogoniaceae (35 spp.), Aulacom- 
niaceae (11 spp.), Meesiaceae (11 spp.), Catoscopiaceae (monotypic), Bartram- 
iaceae (400 spp.), Timmiaceae (10 spp.), Weberaceae (13 spp.), Buxbaumiaceae 
(2 spp.), eansng ( : spp.), and Georgiaceae (5 spp.). The Polytrichaceae 
are just begun.—C. 
Brat? has ae what is really a third edition of the list of vascular 
plants that bears the title “Michigan Flora.” The first edition (1880) was pre- 
pared by C. F. WHEELER and Erwin F. Situ; the second (1892) by C. F. 
WHEELER and W. J. Beat; and this third edition bears only the name of Pro- 
fessor Brat. Besides the incorporation of additional plants, the most notable 
———— 
4RortH, G., Die europdischen Laubmoose. 2 Band, Lief. ro, 11. Imp. 8vo 
a8 et rk = 41-62. Leipzig: Wilhelm Engelmann. 1904. Each M 4. Parts 
not sold 
5 SQUIER, gee O., On the absorption of electromagnetic waves by living 
vegetable organisms. 8vo. pp. 32. Reprinted from Maj. Gen. Arthur MacArthur’s 
Report to War De ept. on Military Maneuvers in the Pacific Division, 1904. 
° ENGLER and PRANTL, Die natiirlichen Pflanzenfamilien. Lief. 219, 220. pp. 
377-672. ay! ba in 37. Leipzig: Wilhelm Engelmann. 1904. M 6 or 12. 
7 BEAL V. J., Michigan Flora. A list of the fern and seed plants growing 
Without ee Reprinted from 5th Report of the Mich. Acad. Sci. 1904. 
