THE PHYSIOLOGY OF PLANTS 825 
a living organism, will presumably form the subject of the second 
volume, and we echo the hope, expressed in the translator's preface, 
that no long interval may elapse between the appearance of this 
second volume and of its translation. 
The Clarendon Press had previously made accessible to English 
readers a treatise on plant physiology, namely, the well-known 
Lectures on Physiology, by _ translated by Prot. Marshall Ward, 
and published thirteen years ago. Sachs se the term in a muc 
broader sense, for the ‘coicess ‘Enoldde a great deal of plant mor- 
phology. They are, moreover, more suited to the general student 
than Dr. Pfeffer’s work. The lation is heavy, often very heavy, 
reading, — avowedly written for the student who is siciniidiag 
= physiology ; ot schn on the other hand, can be read almost 
Hache litera ere, for sabes is a sentence taken 
ar andom fro m Dr Prefer’ introduction (p. 5): iomegfrns g 
n 
same ‘ia the nature of the baneil relationship is such that 
Ww 
definite pores, or as nectar. The Food of Plants (Chapter Moe ) 
includes an account of carbon-assimilation in the form of carb 
dioxide, the absorption of organic food, nitrogen- -assimilation, ate 
the ash constituents. Chapter VIIL., Constructive and Destructive 
ses el is a history of the changes which the food material 
