350 APPENDIX. 



Eimer & Amend, 205-211 3d Ave., N. Y., is fairly good 

 ($2.00). 



Wax tapers or soft-wood splinters. 



Glass cylinder, perforated rubber cork for demonstration 27 

 (see Chapter XVI). 



Small porcelain crucibles with covers, and protected wire 

 triangles to support the porcelain dishes while heating. 



Apparatus stand, small, several, with clamps for holding test 

 tubes, U tubes, etc. 



Agate trays, very shallow, several centimeters long and wide. 

 Agate pans, deep, for use as aquaria, etc., with glass to cover. 



Mercury, for manometer in demonstration of respiration. 



Sheet rubber, or prepared vessels for enclosing pots to pre- 

 vent evaporation of water from surface during transpiration 

 experiments. 



Litmus paper, blue, kept in a tightly stoppered bottle. 

 Filter paper for use as absorbent paper. Lens paper (fine 

 Japanese paper) for use in cleaning lenses; benzine for first 

 moistening the surface, and as an aid in cleaning. 



For materials for culture solution, see Chapter VIL 



Reagents. 



Glycerine, alcohol of commercial (95$) strength, formalin or 

 formalose of 40$ strength, iodine crystals, eosin crystals, 

 fuchsin crystals, potassium iodide, potassium hydrate, potash 

 alum, barium hydrate, caustic potash sticks, vaseline. It is 

 convenient also to have on hand some ammonia, sulphuric 

 acid, nitric acid, and muriatic acid in small quantity. 



REAGENTS READY FOR USE AND FOR STORING PLANT MATERIAL IN. 



Alcohol. Besides the 95$ strength, strengths of 30$, 50$, 

 and 70$, for killing material and bringing it up to 70$ for 

 storage. 



