6 
JOUEKAL OE THE EOVAL HOETICUtTHEAL SOCIETY. 
litmus. I need not say that I did not evolve these chemical details 
out of my own inner consciousness. I got them from my friend 
Professor Church, of Cirencester, who is my tower of strength in 
any chemical difficulty. 
I may add, for the benefit of any outsider who wishes to repeat 
my experiments or make similar ones, that I got the citrate of lithia 
from Messrs. Hopkin and Williams, wholesale chemists, Cross Street, 
Hatton Garden; that its price is Is. 6d. an ounce (480 grains), and 
that litmus is 3d. per ounce. I note this because I rather object to 
the kind of grandiose way we have got into of treating cost as too 
inferior a matter to be worthy of note, whereas, when we have put 
off our public robes, no one can dispute that cost is a vital eon- 
sideration with us all. Whether a man has the income of an 
emperor or of a beggar, he has still to ask himself whether he can 
afford what he is about to do. 
I then passed gutta-percha funnels over the shoots to be experi¬ 
mented on, and secured them as cups, with the shoots growing up 
the middle, by means of cork and tallow. I tried waterproof cloth, 
but it did not hold in—the gutta-percha funnels did perfectly. 
My experiments were made in April and May, wheu the leaves 
were beginning to open. I put one cup on the stem of the Yine. 
