The illustration features a vivarium which can be used in summer or winter:

…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.

Gregory Climenson Bateman, The vivarium, being a practical guide to the construction, arrangement, and management of vivaria . . ., 1897, Fig. 3. Snake or Lizard Glass Case for Summer or Winter Use [chameleon cage]

More ideas for what goes inside this summer project can be found here.—Elizabeth Periale