HOW TO MAKE VIVABRIA. Hi 
which flies, etc., may be dropped, but by means of which 
nothing can escape. This case is, perhaps, more suitable, with 
certain exceptions, for Snakes than Lizards, as the latter are apt 
to climb up the canvas and so escape when the lid is unwarily 
opened. I am indebted to an excellent series of articles, 
published in the Zoologist for 1882-83, on ‘‘The Treatment of 
Snakes in Captivity,’’ by Dr. Stradling, for my knowledge of the 
usefulness of canvas in the construction of Vivaria. 
The Vivarium (Fig. 1), could, of course, be made of glass 
instead of canvas, and though, perhaps, it would then be more 
useful, it would, at the same time, be more expensive to con- 
struct, and heavier to move. If glass be used, any kind of small 
Snake may be kept in the case, and Lizards would not be able to 
escape when the lid is opened. I have never found these latter 
animals get their claws caught in the canvas. The illustration 
shows the Vivarium in use as a kind of fernery for Frogs, Toads, 
Newts, Slow-worms and the like. A board about 4in. wide, is 
Fic. 3.—SNAKE OR LIZARD GLASS CASE FOR SUMMER OR WINTER USE. 
A; Glass Sides; B, Perforated Zinc Top; Cc. Drawer; D, Perforated Zinc Bottom 
E, Round Grooved Wooden Uprights. 
placed along the back, inside, to keep the mould from touching 
the canvas, and some holes have been made in the bottom to 
admit of drainage. 
Fig. 3 represents a case suitable for Snakes, Lizards, or 
Batrachians, during either summer or winter. In the latter 
season, this Vivarium can easily be heated—directions for which 
