84 THE MICROSCOPE. June 



ally from end to end. Scales are sometimes triangular 

 in shape, as in the Emperor Moth, deeply notched at the 

 end, having from two to five projecting points longer 

 even than the integral portion of the scale. 



Pieris Glancippe, a butterfly from China, has the scales 

 tipped with a curious sort of fringe (fig. F). The scales 

 are straight, parallel-sided, rather narrow, with a basal 

 end rounded and the terminal extremity tapered abruptly 

 to a point. It is on each slope of this point that the 

 fringe is arranged. The surface is smooth, and excepting 

 around the foot stalk, is filled with pigment grains, while 

 the footstalk is turned in under the scale. Fig. M repre- 

 sents the scales from the Underwing Moth (fig, N), the 

 scales of the Brimstone Butterfly and (fig. 0), those of the 

 Admiral Butterfly. 



Use Of Ordinary Binocular For Dissecting. 



BY JOHN TATHAM, M. A., M. D. 



For many years past I have been trying to bit upon 

 some simple method of using the stereoscopic binocular 

 instrument for purposes of dissection, and of mounting 

 slides for the microscope, because I have repeatedly 

 found that the use of the best simple microscope for 

 long periods does seriously impair the sensitiveness of 

 the retina for observation with the compound instru- 

 ment. 



I have brought with me the stand which I now employ. 

 It is a very small binocular, on the Rousselet model, and 

 is fitted with a rack-work substage. Into this substage 

 is fitted a brass ring earring a plate, or supplementary 

 stage, of the form now shown. This supplementary 

 stage is made of exactly the same width as the principal 

 stage of the microscope, and the sliding object carrier of 

 the latter is made to slide easily over the supplementary 

 stage. The object of this arrangement will be shown 



