GREENHOUSE AND LABORATORY 31 



MacDougal, D. T. Elementary Plant Physiology. New York, Longmans, 



Green, & Co., 1902. $1.20. 

 The Nature and Work of Plants. New York, The Macmillan Co., 1900. 



80 cents. 

 Osterhout, W. J. V. Experiments with Plants. New York, The Macmillan Co., 



1905. $1.25. 



3. GREENHOUSE AND LABORATORY FOR PLANT 

 PHYSIOLOGY. 



It goes without saying that an experiment greenhouse and 

 laboratory are indispensable for extended and efficient work 

 in Plant Physiology. Something can be done, it is true, with 

 Wardian cases, enclosed bow windows, or other simple arrange- 

 ments, but these should be used only as temporary stages in 

 progress toward a suitable equipment. Buildings and tools 

 alone will not ensure the best results, but neither will goodness 

 of spirit in teacher and students. Results which are worth while 

 come, for the most part, from a combination of material facili- 

 ties with human devotion. 



I shall now describe a greenhouse and laboratory which 

 seem to me adequate for good work by a dozen students in such 

 a course as is described in this book, or, better, by six or eight 

 students, with facilities for some research by the teacher and 

 one or two graduate students. It happens that I can base my 

 recommendations, not upon theoretical likelihood alone, but 

 upon actual practical experience; for I have had the good for- 

 tune to be able to build, with only very reasonable financial 

 restrictions, just such a greenhouse and laboratory as I wished. 

 The account which follows is a description of the carefully 

 planned and thoroughly built physiological equipment of Smith 

 College, with comments upon such features as my five years' 

 use of it have shown could be improved. 



The greenhouse and laboratory adjoin one another and 

 form part of a range of several houses devoted to educational 

 work. This arrangement economically provides the plant mate- 

 rial, the heat, and the skilled care for their proper maintenance. 



