36 PLANT PHYSIOLOGY. 



Small quantities of the following for making nutrient solutions 

 Calcium nitrate. Potassium phosphate. 



Potassium chloride. (According to Detmer, 2.) 



Magnesic sulphate. 



C. APPLIANCES NEEDED FOR EACH STUDENT. 



(T-hose marked with a star need only be supplied one to each two students.) 



Microscope, with forceps, two needles, camel's-hair brush, six slides, 

 twelve cover-glasses, pipette, (microscopes may usually be borrowed 

 from the anatomical laboratory, as they are needed at times only, not 

 continuously). 



* Clock-clinostat (see Fig. 32). 

 Eye-piece micrometer. 



* Auxanometer. Dollar Waterbury clock, double wheel, and cylinder, 

 as described on page 102. 



* Temperature-stage, as described on page 55. 

 2 thistle-tubes, medium size. 



2 burettes, 16 mm. diameter and 50 cc. capacity. 



i (better 2) iron supports (as in Fig. 10) with burette-holder and 

 clamp. 



i diffusion-shell, Schleicher and Schuell, 16 mm. diameter (obtainable 

 from Eimer & Amend, New York). 



1 sheet best-quality glass, 30 cm. square, with corners removed or 

 rounded, or round, 30 cm. diameter, and three wooden legs to support 

 it, as shown by Fig. 29. 



2 good centigrade chemical thermometers, graduated from o to 

 above 100. 



2 plain calcium chloride tubes. 



2 wide-mouthed bottles of about 500 cc. capacity, with corks to fit. 



2 loo-cc. plain funnels. 



1 3o-cm. graduated wooden scale. 



3 largest size stout U-tubes, arms about 15 cm. long, with soft rubber 

 stoppers to fit one arm, and slender bottles to hold them (see Fig. 21); 

 or else, better, the three bulb tubes described on page 97. 



2 concave watch-crystals and clamp (see page 82). 

 Small candle. 



4 Zurich germinators (page 108) with pulp-plate and water-bottle, or 

 else 8 small and 4 somewhat larger flower-pot saucers. 



3 plain saucers. 



3 plain tumblers. 



* 2 crystallizing-dishes, 12 cm. diameter, and 5 cm. deep, with good 

 corks that just fit them. 



