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 Nudibranchia. The first allied to Doris 

 pinnatifida, Montagu, the second to D. longicornis and T). ceerulea 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 Arenaria, 2. Lathyrus pisifolius, 3. Cochlearia 

 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. Vigors 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 



