10 Dr. BuonANAN on the Coagulation of the Blood. 



posed that the Section should adopt measures for forming a Flora of 

 Glasgow, and suggested as a model tho lists prepared by the Berwick- 

 shire Naturalists' Club. The subject was remitted to a Committee, 

 consisting of Mr. Gourlio, Mr. Lyon, Mr. Adamson, and Dr. Thomson, 

 — Mr. Gourlie, Convener. Dr. Balfour read an account of a Botani- 

 cal Excursion, last autumn, to the Mull of Kintyre, illustrated by plants 

 collected in the district. 



January 28th, 1845. — Professor Balfour in the Chair. The 

 President was added to the Committee on the Flora of Glasgow. Dr. 

 Balfour made some observations on the development of monocotyle- 

 donous and dicotyledonous plants, showing that the former have the 

 tendency to produce univascular individuals, obeying an organogenic 

 law, of which three is the type, while the latter have the tendency to 

 produce bivascular individuals, according to an organogenic law, of 

 which Jive is the type. 



Dr. Balfour also noticed the recent remarks of Duchartre, on the 

 order in which the different parts of the flower in the genus Primula are 

 developed, and showed that in this way the opposition of the stamens 

 to the petaloid segments might be explained. The development of the 

 free central placenta in Primulaceae was also mentioned as an argu- 

 ment in favour of the axile formation of that organ. Dr. Balfour con- 

 cluded his remarks by noticing the opinion of Thuret and Decaisne, 

 as to the reproductive organs in Fuci, and pointed out the analogy 

 between these and similar organs in other cryptogamic plants. Dr. 

 Balfour's observations were illustrated by drawings and specimens. 



It was agreed that a Conversational Meeting should be held in the 

 Merchants* Hall on the 12th March, at which will be exhibited a 

 collection of works of art, purchased by the Government, at the Expo- 

 sition in the Champs Elysees at Paris, and sent down for a short time 

 to the School of Design of this city. 



Dr. Balfour made some observations relative to the reproductive 

 organs of Fuci. 



The following paper was read : — 



VII — On tlve Coagulation of tlie Blood and other Fibriniferous Liquids. 

 By Andrew Buchanan, M.D., Professor of the Institutes of Medicine 

 in the University of Glasgow. 



Dr. Buchanan showed some specimens of hydrocelic serum, the 

 fibrin of which was coagulated by means of a few fragments of the 

 waslwd clot of blood added to it sometime before. The coagulated 

 masses were transparent and tremulous, like calf-foot jelly, and so firm 

 as to admit of being inverted on a plane surface without altering their 

 shape. Dr. Buchanan made the following observations in explanation 

 of the phenomenon. 



