365 



rally suggested itself, when did those pieces which were now 

 above water, grow ? 



A fact, to which he alluded on another occasion, at a meeting 

 of the Society, viz : that during the whole Avinter season, (De- 

 cember, January, and February,) the level of the water all along 

 the northern shore of Hayti is from four to six feet higher than 

 during the summer season, being raised by a constant northerly 

 wind during those months, suggested to him the idea, that those 

 coral branches, as far as they were above water during summer, 

 might have grown during a single winter of three months only. 

 This would show a very rapid growth of this kind of corals. The 

 fact that the Madrepores, when growing so near the surface, 

 and, as stated above, partially uncovered during the summer, very 

 often, in the course of a few years, give rise to small Mangrove 

 islands, between the outside coral reef and the shore, was well 

 known to a native mulatto sailor, whom Dr. Weinland employed 

 there. As he had observed at a former meeting, there is hardly 

 any change of high and low tide along that shore of Hayti ; so 

 that this can have no bearing on the present question. 



The Librarian announced the exceedingly valuable 

 donation of Dr. B. D. Greene, of the first twenty volumes 

 of the Transactions of the Linnaean Society and of Cu- 

 vier's Ossements Fossiles. This donation makes the 

 Society's set of the Linnean Transactions complete. It 

 was voted to tender the thanks of the Society to Dr. 

 Greene for his donation. 



In announcing this valuable donation, Mr. Dillaway 

 remarked that the Society had, on many previous occa- 

 sions, been indebted to the liberality of Dr. Greene for 

 additions to the Cabinet and Library. Within the past 

 year he made a contribution of plants to the Herbarium 

 of the Society which has largely increased the resources 

 of the Botanical Department. 



The President stated that a considerable sum having 

 been subscribed for the purchase and stocking of an 

 Aquarium, it would be advisable to appoint a Commit- 

 tee to attend to the matter. Accordingly, Dr. S. Knee- 



