584 Vines . — The Proteolytic Enzyme of Nepenthes. 
The material of N. Mastersiana which I have used was 
for the most part obtained from the Oxford Botanic Garden, 
but I am very much indebted to Messrs. Veitch, and to the 
authorities of the Royal Gardens, Kew, for further supplies 
of liquid and pitchers of this and other species. 
