WORKS OF REFERENCE. 



In connection with the exercises, frequent references 

 are given. In a few cases books of a more or less popular 

 character are mentioned, and some of the most important 

 works in French' and German are referred to, inasmuch 

 as they are well-nigh indispensable to the teacher. In 

 general, the works named are easily obtained, and ought to 

 have a place in any respectable school library. Several 

 copies of the books in constant use should be placed on 

 tables in the laboratory, where they can be consulted with- 

 out loss of time, the students being given to understand 

 that they are expected to look up references as habitually 

 and critically as they would if reading a classical author. 

 One or more of the best periodicals may properly be 

 included in the essentials of the laboratory outfit. The 

 following list, by no means complete, includes some of the 

 most generally useful botanical works. 



LABORATORY MANUALS. 



Arthur, Barnes, and Coulter, Plant Dissection. Henry Holt & Co., New 



York, 1886. 

 Clark, Practical Methods in Microscopy. D. C. Heath & Co., Boston, 1893. 

 Zimmermann, Botanical Microtechnique. Henry Holt & Co., New 



York, 1893. 

 Strasburger, Practical Botany. Macmillan & Co., New York, 1889. 



These manuals are of the utmost value as laboratory guides. 

 The first is the simplest, and, on the whole, most suitable for 



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