302 THE VIVARIUM. 
will work their way into the mould, to re-appear in course 
of time as flies. Harwigs form very favourite food with some 
Batrachians, such as Tiee-frogs, and can often be secured in 
the autumn months by placing hiding-places, e.g., mverted flower 
pots on sticks, in the different parts of the garden which are 
generally haunted by these creatures. Slugs are likewise secured 
without much trouble by laying down in the garden, upon those 
beds which are infested by these molluscs, pieces of flat board. In 
the morning the boards can be carried to the Vivarium, and the 
slugs, which will be found clinging to the under side of the wood, 
given to those animals which feed upon them. Slugs’ eggs, 
found while digging, may be placed in the Vivarium, and so in 
time add to its food supply. Mealworms should be placed in a 
small glass dish, cut of which they cannot climb. If they are 
not eaten after a reasonable time has elapsed, they should be 
returned to the crock from which they have been taken, 
