APPARATUS AND GLASSWARE. 349 



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 ^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 2omm diameter and io-i$cm 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 locm X Acm 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.) 



A few medium glass cylinders with ground top, and glass 

 plates to cover. 



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; i graduated to looocc, i graduated to 

 i oocc. 



Funnels, small and medium (6 and 16 m in width). Test 

 tubes. Bell jars, a few tall ones and a few low and broad. 

 Thistle tubes. Chemical thermometer. 



Balance for weighing. A small hand-scale furnished by 



