440 
PROCEEDINGS OF THE BRITISH ASSOCIATION. 
The milk was handed round to the members; it smelt sour, an d tasted bitter 
and disagreeable. 
Dr. Traill related that he had obtained from Caraccas some milk of a 
reputed species of Galactodendron; it kept very well, and at the end of six 
months was quite sweet. It differed from the milk of the Cow-tree of Hum¬ 
boldt in not possessing Caoutchouc. 
Mr. Sandbach exhibited two new birds from the museum of the Royal Insti¬ 
tution, Liverpool, and proposed calling them Pyronites superciliosu^ and Parus 
melanotus. 
Mr. Forbes read a paper on some new forms of animals and plants. He ex¬ 
hibited two new mollusca of the order Nudibrandiia. The first allied to Boris 
pin7iatijida^ Montagu, the second to B. longicornis and B. cceridea of the same 
author. They were both from the Isle of Man. The next animal was the 
Asterias rubens of Johnston, which, he stated, was not Asterias spinosus of 
Link, as had been supposed. This rare animal had been lately obtained by Mr. 
Wallace, of the Douglas museum. Isle of Man. He also exhibited two spe¬ 
cimens of Polygala and Euphrasia, which he thought might be found to be 
distinct species of those genera. 
Professor Graham stated that Dr. Macnab had lately added to the Scotch 
Flora, 1. A new species of A^'enaria, 2. Lathyrus pisifolius, 3. Cocklearia 
Anglica. 
There was no meeting on Thursday, in order to enable the members to visit 
the collections of the Earl of Derby, at Knowsley. 
Friday. —The meeting commenced this morning by Dr. V igors proposing a 
vote of thanks to the Earl of Derby for his liberality to the members who 
visited Knowsley yesterday. 
The President stated that he had a new plant to introduce to the section, and 
which he had discovered on the body of a dead Fly on a window-sill in Liverpool. 
He observed that the appearance this gave to the Fly had not escaped the 
notice of Kirby, who had ascribed it to a kind of plethora in the insect. He 
was convinced, however, that it was a plant, and he believed at present unde¬ 
scribed. It was an interesting fact, as we had now positive evidence of the 
capability of the vegetable and animal kingdom living parasitically on each other, 
as well as on themselves. Plants living on plants, animals on animals, and 
animals on plants, have been long known, but now we have the singular fact of 
plants living on animals. They must be called Epizooites. 
Professor Lindley stated, through the President, that a disease called ‘‘ Mus- 
cardine,” had existed among the Silk-worms of France, which had occupied the 
