4H APPENDIX. 



Warming: Lehrbuch der okologischen Pflanzengeographie. Ber- 

 lin: Gebr. Borntrager. (A German translation by Knoblauch. 

 An English translation is now in preparation.) 



Pfeffer : Pflanzenphysiologie. Ed. II., vol. I. Leipzig: Wil- 

 helm Engelmann. M. 20. (An English translation is now in 

 preparation by Dr. A. J. Ewart.) 



Vines : Lectures on the physiology of plants. New York : The 

 Macmillan Co. $5.00. 



Goodale : Physiological botany. New York : The American 

 Book Co. $2.00. 



FOR LABORATORY DIRECTIONS. 



Bergen : Elements of botany. Boston: Ginn & Co. $1.10. 



Spalding : Introduction to botany. Boston : D. C. Heath & Co. 

 80 cts. 



Macbride : Lessons in elementary botany. Boston : Allyn & 

 Bacon. 60 cts. 



MacDougal : Experimental plant physiology. New York : Henry 

 Holt & Co. $1.00. 



Arthur : Laboratory exercises in vegetable physiology. Lafay- 

 ette, Ind.: Kimmel & Herbert. (Pamphlet.) 35 cts. 



Darwin and Acton : Practical physiology. New York : The 

 Macmillan Co. $1.60. 



Arthur, Barnes and Coulter : Plant dissection. New York : 

 Henry Holt & Co. $1.20. 



