Hooker

Try Fibrin, (as standard test)

— Cartilage (for effect)

— fibro-cartilage, as will not fully digest, but rendered hyaline by Drosera—

Insect in secretion & water for some time

Pour out of virgin pitcher some secretion in watch glass and with it digest a $\frac{1}{20}$^th of inch cube of albumen.— If not, then try the same with some secretion from a pitcher which is in the act of Digestion.— Seems to me very important, whether the ferment is secreted only from a stimulus— I understand secretion of virgin pitcher is acid.— We could try Citric acid with pepsin, if we knew proportion of citric acid in the secretion—²

Will you put 6 cabbage-seeds and 3 Peas in secretion & in water for 4 days, & then lay on damp sand under cover in your room & see if they equally germinate. If the Nepenthes seeds do germinate—see whether edge of cotyledons &c are browned & injured.

Please send in tin box with damp moss a piece of the Tropical aerial Epiphytic Utricularia, to look at the bladders³