46 



Antenna of Insects. 



leaving the point projecting for an inch or more. With one of 

 these in each hand commence operations. The head may be 

 either side :;p. Much may be learned in dissecting large' in- 

 sects even with no glass ; but in all cases, and especially in 

 small insects, a good lens 'will be of great value. The best lens 

 is one of Tolles', sold by Mr. Stoddard of the Boston optical 

 works- These are very excellent and thus high priced, costing 

 $14.00 a lens. 



The Coddington lens, mounted in German silver, is nearly 

 as good. These are imported from England. They can be 

 procured of any optician, and only cost $2.00. These lenses 

 can be mounted in a convenient stand (Fig, 8) which may be 



Fig. 8. 



Microscope mounted fbr Dissecting. 



made in twenty minutes. I think one of these more valuable 

 than a large compound microscope, which costs many times as 

 much. Were I obliged to part with either, the latter would go. 

 I require my students to do a great deal of dissecting, which 

 they enjoy very much and find very valuable. I would much 

 rather that my boy should become interested in such study, 

 than to have him possessor of infinite gold rings, or even a huge 

 gold watch, with a tremendous charm. Let such pleasing rec- 

 reation gain the attention of our boys, and they will ever con- 

 tribute to our delight and not sadden us with anxiety and fear. 

 _ The antennae (Fig. 7, a, a) are the horn-like jointed organs 

 situated between or below and in front of the large compound 



