LINNEAN SOCIET? OF LONDON. 7 



The two specimens of E. colUnum upou the table were found in 

 the Herbarium of the IJohnesdale Natural History Club, Reigate. 

 They were presented to the Club, with many other plants, by 

 Dr. J. A. Power, and the specimens are labelled " Scotland," but 

 are undated ; they were probably collected by Dr. Power about (50 

 years ago. E. collinum occupies au intermediate position between 

 E. moiitanum and E. laiiceolatum, and occurs in rocky places, 

 ascending to some height, in mauy parts of Europe. By some 

 botanists it is considered a variety of E. montanum, but Dr. 

 Haussknecht, the monographer of the genus, considers it a good 

 species. The only British species with which it may be compared 

 are montanum and lanceolatum ; from the former it differs by its 

 stalked, mostly alternate, leaves, cuneate at the base, and pale pink 

 flowers ; from lanceolatum (to which it seems nearest allied) by 

 its broader, ovate leaves and other characters. 



E. collinum, as I saw it growing in the Pyrenees last summer, 

 seems to have a distinct habit of its own, and can be easily recog- 

 nized alive from both the above two species. 



Eev. E. S. Marshall has seen these iScotch examples, and believes 

 them to be correctly named. 



A discussion took place, in which the General Secretary, 

 Mr. James Groves, Mr. E. M. Middleton, and Prof. J. B. Farmer 

 took part, and Mr. C. E. Salmon replied. 



The following papers were read : — 



1. " Researches into the Physiology of the Yeast-Plant, 

 Saccharomyces Ccrevisiw.^' By the President. 



2. " Further Researches on the Specialization of Parasitism in 

 the Erysiphacea;." By Ernest S. Salmon, F.L.S. 



February 18th, 1904. 



Prof. Sydney H. Vines, F.R.S., President, in the Chair. 



The Minutes of the last Meeting were read and confirmed. 



Mr. Samuel Alexander Stewart was elected an Associate of the 

 Society. 



Mr. L. T. Badams exhibited a folio guard-book containing a 

 large collection of West Australian flowers and vegetable products, 

 grouped for artistic effect, which had been prepared by a friend in 

 that colony. 



The following papers were read : — 



1. " Mendel's Laws and their application to Wheat-Hybrids." 

 By Mr. li. H. Bift'eu. (Connuunicated by the President.) 



2. " Heredity and Variation as seen in Primula sinensis." By 

 Mr. W. Bateson, F.E.S. (Communicated by the President.) 



