iQoS] CURRENT LITERATURE 



20 1 



explanation as to what is to be done, and written reports 

 The great number and variety of the exercises would permi 

 course in botany, or special courses intended for med 

 students. One section, of some hundred exercises, is devoted to important 



tomical and morphological papers, each represented by a single exercise. Another 



takes up the ''simples" of the Dutch pharmacopoeia for the benefit of pharma- 

 ceutical students. The language of the handbook will probably preclude its use 

 even by teachers in this countr>'.— C. R. B. 



Jest's plant physiology. — The active demand which exhausted the first edition 

 of this valuable work, and the advances in plant physiology since 1903, not to 

 mention the appearance of an English translation, have required the preparation 

 of a second German edition.* As we have formerly and recently expressed a 

 highly favorable opinion of the quality of this work,^ nothing is now needed but to 

 point out changes in the new edition. The title-page indicates the transfer of 

 Dr. Josx from Strassburg to Bonn. In the arrangement of material we note the 

 change m the title of the third section from Energiewechsel to Ortwechsel, and the 

 transfer of the lecture on the forms of energ}' in the plant from the third section 

 to the first (S toff weeks el), bringing it into close association with the discussion of 

 dissimilation, where it more properly belongs. The term Orhvechsel h a happy 

 designation of the section which deals with movements. The additions, thou^ 

 shght, are numerous and in some cases important. The number of figures is 



increased n 

 phy, which 



The biblioffira- 



of the volume, where it is much more compactly presented; but the alphabetic 



arrangement 



bold-faced type the po. 



obscurity of the soUd lists is obdated. By this change some twenty pages 



gained, and devoted to the new matter, 

 practically the same.— C. R. B. 



remains 



Molecular physiology. — In 1903 Professor Lfo Errer.4 prepared a course 

 of lectures in what he calls molecular physiology.^ The manuscript has been 

 arranged and edited by Dr. Schoutedex and has been published by the Botanical 

 Institute in its RecueU. In a preface Professor H. T. HAMBURGEKof Groningen, 



u) wnom the manuscript was submitted 

 que ce serait im crime de lese-science d 



The lessons consist of a presentation of those portions of molecular physics 

 lich are particularly applicable to physiology. The properties and behawr 

 gases, liquids, and solids, such as diffusion, sxu-face tension, cohesion, viscosity, 



Vorlesugen uber Pflanzenphysiologie. 2 ed. Imp. 8vo. 



M^- iSj, Jena; Gustav Fischer. looS 



1907 



^ Ers£ra, Leo, Cours de physiolc^e molecuiaire, Mt au doctoral en sciences 

 botaniques en igoj. Lemons recueillies et redigees par H. ScHOtrrEE-EK. Rectjdl 



Inst. Bot- PJi-iiv^Hiac t-r*^ ^-^ ^r^^ 



