ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



347 



" The longest end of the table ought to face a window approximately 

 looking northwards. The worker seated on the bench T can thus employ 

 direct or reflected light according to the position, inclined, upright or 

 horizontal, in which he places his Microscope. To his right there is fixed 

 a reagent stand, R. As soon as he has completed his observation, or 

 adjusted an object which he deems worthy of delineation, he should shift 

 his instrument to the position D and take his seat upon the chair S. By 

 so doing, he will gain the inestimable advantage of working in a clear 



Fig. 93 



transmitted light without the chance of a vitiated result through interference 

 rays, and with absolute security against the evil effects of a more or less 

 intense glare. The value of thus being able to shift one's position from 

 front to side on the table will soon become evident to workers with the 

 Microscope who indulge in prolonged observations. The top plan (fig. 94) 

 shows the position of the Microscope during investigation, or whilst mount- 

 ing objects ; B, place for a dust-proof box, for use whilst preparing specimens 

 for observation, a detailed description of which will be given in the sequel ; 



2 A 2 



