APPENDIX , 203 



Teaching conditions may render impossible any extended 

 use of reference books, but no apology is needed for having 

 provided a generous reference list. The use of these books 

 and others of like character will enrich the course. While 

 library equipment and the preferences of instructors may 

 make desirable many substitutions in any list named, it is 

 urged that the greatest care be exercised in the selection 

 of references. 



Where a double period for daily laboratory and class 

 work is arranged, no lesson preparation outside those hours 

 will be necessary. In addition to recitation and experi- 

 mental work there is in this arrangement an opportunity 

 under favorable conditions to teach pupils how to study, 

 and to direct their desire for knowledge along lines that offer 

 the largest educational values. 



Bailey (Mac.), Sanitary and Applied Chemistry $1.40 



Bengtson & Griffith (Mac.), The Wheat Industry 65 



Bigelow (Mac.), Applied Biology 1.40 



Blakeslee & Jarvis (Mac.), Trees in Winter 2.00 



Brownell (T. P.), Lessons in Physics 75 



Brownell (T. P.), Lessons in Chemistry 50 



Caldwell & Eikenberry (G.), General Science '.80 



Clark (Am.), Introduction to Science 1.20 



Coleman (Mac.), Hygienic Physiology 60 



Coleman (Mac.), The People's Health ... .70 



Conn (G.), Bacteria, Yeasts, and Molds 1.00 



Coulter, J. G. (Am.), Plant Life, and Plant Studies 1.20 



Coulter & Patterson (Ap.), Practical Nature Study .... 1.35 

 Crawford (Hi.), Nature Study Lessons ... .75 



Doty (Ap.), Prompt Aid to the Injured . . 1.50 



Freeman & Chandler (G.), World's Commercial Products . 



Goff (Co.), Principles of Plant Culture 1.00 



Harper (Mac.), Animal Husbandry for Schools 1.40 



