I shall experiment with albumen, as provided by the egg of the hen; albumen being an isomer of fibrine, which is the principal element of all flesh diet.
_Osmia tricornis_ will lend itself to my experiment better than any other insect on account of its dry honey, or bee-bread, which is largely formed of flowery pollen.

I knead it with the albumen, graduating the dose of the latter so that its weight largely exceeds that of the bee-bread.

Thus I obtain pastes of various degrees of consistency, but all firm enough to support the larva without danger of immersion.

With too fluid a mixture there would be a danger of death by drowning.
Finally, on each cake of albuminous paste I install a larva of medium growth.
This diet is not distasteful; far from it.

The grubs attack it without hesitation and devour it with every appearance of a normal appetite.
Matters could not go better if the food had not been modified according to my recipes.