SURRENT LITERATURE: 
BOOK REVIEWS. 
The nutrition of plants. 
Tals central subject of plant physiology, as to which there is so great an 
imount of popular misapprehension, is the one most directly important to all 
Sowers of plants. The Germans are fortunate in having had for some years 
‘clear and interesting little book on this subject, of which the second edition 
af recently been issued.‘ Dr. Adolph Hansen, the author, prepared the 
minal book more for his own satisfaction, he says, than with any ulterior 
jitpose; but it found so wide a circle of readers that both author and 
publisher seem under necessity to provide a new edition. 
The book treats of the source of carbon, the organs by which COs is 
- sorbed and elaborated, the significance of light for photosynthesis (this 
oo iF used throughout), and the product. The author then considers the 
ihe Supply, the mineral constituents, the organs (roots) by which they 
“echiefly obtained, and the movements of water, including its loss and the 
eg thereof. As “nutrition” is used in its widest sense, he further dis- 
nce a production of proteid, the translocation of plastic substances, and 
The non-green plants, both spermatophytes and fungi, receive 
aaa ina concluding chapter. aed 
‘ sa is admirably written in clear and simple language, a = a 
in an attractive way. Theoretical considerations are 0 
here is little to criticise 
‘nfavorably, 
te the author should reconsider—‘ Foods of the plant are 
Without which the plant could not exist.” 
W 
Wefy] 
those 
® should be glad to see sucha book in English. It would be immensely 
B. 
‘0 plant §rowers and for popular reading.—C. R. 
The completed host index. : 
: i the 
thirteenth volume of Saccardo’s Sylloge Jungorum, a ee 
‘omp| of which. was given in a previous issue of this ee Dr. P. 
se having been issued in parts. It has been prepared by ©" 
; r2mo. pp. iv-+ 299 
THE 
frst half 
Aes, — ADOLPH: Die Ernihrung der Pflanzen. 
- ' en: F. Tempsky; Leipzig: G. Freytag. 1898. M 5. 
: Bor, Gaz. as: 287 
899) . 
399 
= 
