402 MANIPULATION AND PRESERVATION OF THE MICROSCOPE 



/ Z 



nected with a waste-pipe, through which the waste water, etc. flows 

 innocuously away. 



3 represents the position of a Thoma microtome, and A, B are two 

 well-framed flat slides, which may be drawn out eighteen inches, or 



pushed fully in. They 



/-N are found at times to 



I \ 4 be of great service, 



where the space is some- 

 w r hat confined. 



This table may be 

 fitted on one side (the 

 left) at least with a set 

 of drawers and shelves 

 for receiving various ap- 

 paratus and materials, 

 with larger quantities of 

 stains and reagents, 

 ha rdeiiing, macerating, 

 and other materials; 



I l i ^ i while if a door covers 



^ A "* -B the whole, the inner side 



FIG. 338. Laboratory table for microscopical work, of this may be readily 



fitted to receive drop- 

 bottles 1 containing all the stains, reagents, and similar materials in 

 constant use. If these be labelled with paper labels saturated in a 



solution of solid paraf- 

 fin in turpentine, and 

 after the turpentine 

 has evaporated firmly 

 fixed on the bottle, 

 they are very perma- 

 nent, and, indeed, 

 better than anything 

 we have tried save 

 where the name of 

 the contents is en- 

 amelled or engraved 

 on the bottle. 



It has been al- 

 ready pointed out 

 that there are condi- 

 tions of research in 

 which the microscope 

 has to be in a con- 

 stantly vertical position. This was the case with the researches on 

 the saprophytic organisms made conjointly by the present Editor 

 and Dr. J. J. Drysdale. 2 It must always be the case where certain 

 forms of continuous life stages are employed for prolonged or coii- 



1 Chapter VII. 



2 Monthly Micro. Journ. vols. x. to xviii. ; Journ. R.M.S. vol. iii. p. 1 ; vol. v. 

 series ii. p. 177 ; vol. vi. p. 193 ; vol. vii. p. 185 ; Vol. viii. p. 177. 



FIG. 339. Tripod for using microscope in an 

 upright position. 



