202 APPENDIX - 



thermometer, chemical, C. & F $ .0 



thistle tube 08 



vaseline, bottle 05 



weights, metric, set, 1 to 500 grams 1.75 



weights, metric, fractional, each 05 



wire, copper, No. 22, insulated, | Ib 30 



wire gauze, asbestos center, 5" X 5" 09 



wire, iron, No. 24, annealed, 4 oz 16 



wire pliers, side-cut, 6-inch 70 



A LIBRARY LIST OF REFERENCE BOOKS 



Books should be considered tools for the use of pupils. 

 To learn to use them aright is fundamental in school work, 

 and one of its chief aims. Knowing where to find needed 

 information, coupled with a desire for knowledge, constitutes 

 no small part of an education. In the books listed below, 

 there is provided a fund of information on the topics of these 

 Lessons that is worthy the best efforts of every pupil. 



One book generally suffices as a text in any subject in 

 school work. But in General Science no one book is likely 

 to provide all the material that very properly comes under 

 discussion. In some cases it may be desirable to have 

 several copies of the less expensive books where these are 

 of superior worth and usefulness. For class instruction 

 this is often wiser than to make the same outlay for single 

 copies of all the books named. To have the use of only 

 one book in General Science, however valuable the results 

 attained may be, is to suffer somewhat the same limitations 

 as does the carpenter who for tools has but a jackknife. 

 The skilled mechanic selects from his large assortment that 

 particular tool best suited to his purpose. 



