.-/ PPA RA TUS A XD RE A CENT*. 4 1 I 



sharps) with the eye end set into a soft pine penholder or similar 

 handle. They must be kept sharp on a fine oil-stone. 



Drawing materials. A medium pencil (No. 3 or M) and a very 

 hard one (No. 6 or 6 H) should be used and kept sharp. Slips of 

 heaviest linen ledger paper (120 Ib.) cut 14 X 8 cm. are recom- 

 mended. Only one drawing should be put on a slip. 



APPARATUS FOR PHYSIOLOGY. 



Since much of the apparatus needs to be put together by the 

 student, the requisites are mainly tools and a good supply of tub- 

 ing, both glass and rubber, bottles, and bell jars. The following 

 will enable the foregoing experiments to be carried out. 



Tools. Hammer, fine saw, three or four chisels, assorted files, 

 brace and assorted bits, screw-driver, smoothing plane, with a 

 supply of nails (especially finishing nails) and screws will be 

 found most useful. 



Glass tubing. A little capillary tubing (0.5 mm. bore) will 

 be needed. Most used sizes are 5 mm. (3 mm. bore), 7 mm. 

 (5 mm. bore.) Some larger sizes (13 and 19 mm.) will also be 

 useful. 



Rubber tubing. 3 and 5 mm. bore mostly ; some of 10 and 15 

 mm. bore. 



Bottles. Wide-mouthed, various sizes, up to i liter. 



Tumblers. Jelly glasses answer well. Odd lids and glass dishes 

 from homes and stores can be made useful. 



Corks. Assorted sizes. Several rubber stoppers, sizes 8, 10, 12, 

 3-hole, are desirable. 



Bell jars. Several sizes are necessary ; 15 X 20 and 20 X 30 cm. 

 will be found useful ; also at least one 30 X 50 cm. All should 

 have ground rim and tubulure at top. 



Funnels. Glass, assorted sizes. 6, 8, and 12 cm. diam. are 

 most used ; there should also be two or three larger ones. 



Filter paper. Buy cut filters 15 and 18 cm. in diameter. 



Thermometers. Should be graduated in degrees, 10 to-)- 100 

 C., with milk-glass scale. 



Test tubes. 2 X 15 cm. is a convenient size. 



f-tubes. Two sizes, 5 and 10 mm. bore. 



Bunsen burners. If gas is not available, gasolene burners 

 should be substituted. 



