APPENDIX. 



SUGGESTIONS FOE LABOEATORY STUDIES AND 



DEMOXSTEATIONS. 



The "Laboratory Directions in General Biology," published 

 and copyrighted by Prof. E. A. Andrews of Jolms Hopkins 

 University, will be found extremely useful and ijractlcal. Also 

 the following : Huxley and Martin's "Practical Biology " (Howes 

 and Scott), and the accompanying ' ' Atlas of Biology, • ' by Howes ; 

 Marshall and Hurst's "Practical Zoolofirv," Colton's "Practical 

 Zoology," Bumpus's "Invertebrate Zoology," Dodge's "Ele- 

 mentarv Practical Bioloo-v," Brooks's "Handbook of Inverte- 

 brate Zoology." According to our experience, the periods for 

 the course should be so arranged as to afford laboratory work 

 and recitations or quizzes in about the proportions of three to 

 two (for examj)le, three periods of laboratory work and demon- 

 stration to two of quiz), for a half-year. 



Chapter I. (Introductory.) 



It is convenient to give at the outset one or more practical 



lessons on the microscope, affording the student an opportunity to 



learn its different parts, use its adjustments, test the magnifying 



power of the various combinations, etc. A good object for a 



first examination is a human hair, which serves as a convenient 



standard of size for comparison with other things. Other good 



objects are starches, the scales from a buttertly's wing (sketch 



under different powers), a drop of milk or blood, and ]i(nv(h^rod 



carmine or gamboge rubbed up in water (to show the Brownian 



movement). The student should compare the same object as 



seen under the simple and the compound microscope (to show 



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