114 THE MICROSCOPE. Aug 
How to Make and Manage an Insect Vivarium. 
In order to understand the marvels of butterfly and 
moth it is necessary to gain a knowledge of the life- 
history of these children of the sun, from the tiny egg to 
the perfect insect. Many are the methods adopted for 
watching the various developmeuts. Caterpillars being 
mostly vegetable feeders, there is no difficulty in giving 
them fresh supplies of food it captured. A garden-pot 
half filled with loose sandy earth, with a few pieces of 
cane bent over, and the ends inserted in the pot, covered 
with gauze or net, and a string passed over it below the 
rim will make a very good cage (fig. 1). This is easily 
made and within the reach of all. A slip of the food 
plant should be placed in a phial of water, and put in the 
center of the pot, pushed well into the mould, keeping 
the whole in the shade, and renewing the food supply as 
often as needed. Arranged thus, the creatures can be 
watched, and the caterpillars will be seen to grow to 
