APPARATUS AND REAGENTS. 51 



this come glycerine and dammar varnish, but Canada balsam, which 

 has almost invariably a yellow tinge, should be absolutely tabooed. 



Apparatus and Reagents. 



36. In addition to the ordinary apparatus and reagents, the fol- 

 lowing should always be kept near at hand and ready for use : — 



Clean cover-glasses. 



A couple of platinum needles (Fig. 21). 



A pair of platinum-pointed forceps (Fig. 10). 



A Bunsen's burner, or a spirit lamp. 



A number of watch-glasses and shallow glass dishes. 



A white porcelain slab or tile. 



A large flat dish — glass or porcelain. 



A couple of wide-mouthed glass stoppered bottles ; one containing 

 caustic potash, the other containing turpentine. Old slides 

 and cover-glasses are transferred to these fluids, one or other 

 of which will dissolve most of the mounting reagents. 



A wash bottle containing distilled water. 



Fig. 12. — Small narrow-mouthed bottle fitted with funnel filter, 

 used especially for aniline staining fluids and aniline water. 



A number of small glass funnels and filter papers. 

 Plenty of white filter or blotting paper. 

 Test-tubes and rack. 



Bottles (Fig. 12) to hold stains. Each bottle has, instead of a 

 stopper or cork, a small glass funnel and filter paper, through 



