ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



265 



MICEOSCOPY. 

 a. Instruments, Accessories, c&c. 



Coppock's Combination Microscope. — This Microscope has been 

 constructed by Mr. C. Coppock mainly from data obtained from con- 

 sultation with the leading teachers of science in Edinburgh. 



The general form of the instrument is shown in fig. 36, the stage 



Fig. 36. 



and body being carried upon a turned pillar, after the style of the 

 Continental models, and the stage being as large as is consistent with 

 the relative proportions of the whole instrument. The body-tube 

 allows the highest objectives to be readily focussed by giving a slight 

 spiral movement to the tube, and the draw-tube is stopped when 

 drawn out to the normal nine inches. The side condenser is fixed by 



