43 2 APPENDIX. 



found to be excellent, is Bausch & Lomb's AAB (which they 

 recommend for high schools), costing about $25.00 to $28.00. 

 I have compared it with some foreign patterns, and the cost of 

 these is no less, duty free, for an equivalent outfit. Of course, 

 one can obtain a microscope for $18.00 to $20.00 without some 

 of these accessories, but I believe it is better to have fewer 

 microscopes with these accessories than more without them. 

 Of the foreign patterns the Leitz (furnished by Wm. Krafft, 

 411 W. 59th St., N. Y. ) and the Reichert are good, while Queen 

 & Co., Philadelphia, Pa., and Bausch & Lomb,. Rochester, 

 N. Y., furnish good American instruments. 



Glass slips, 3X1 inch ; and circle glass covers, thin, 3/4 in. 

 diameter. 



Glass tubing of several different sizes, especially some about 

 ^mm inside diameter and 7 mm outside measurement, for root- 

 pressure experiments. 



Rubber tubing to fit the glass tubing, and small copper wire 

 to tighten the joints. 



Watch glasses, the Syracuse pattern (Bausch & Lomb), are 

 convenient. 



U tubes, some about 20mm diameter and 10-15COT long. 

 Corks to fit. 



Small glass pipettes ( ' ' medicine droppers ' ' ) with rubber 

 bulbs. 



Wide-mouth bottles with corks to fit. Reagent bottles. (Small 

 ordinary bottles about 1 ocm x A cm with cork stoppers will an- 

 swer for the ordinary reagents. The corks can be perforated 

 and a pipette be kept in place in each ready for use. Such 

 bottles should not be used for strong acids.) 



Small vials with corks for keeping the smaller preparations in. 



Small glass beakers or tumblers. 



A few crockery jars for water cultures. 



Fruit jars for storing quantities of plant material. 



Glass graduates; 1 graduated to iooocc, 1 graduated to 

 ioocc. 



Funnels, small and medium (6 and ioc»z in width). Test 



