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. 



