Donations to the Library. 



237 



III. On the Natural History of Euglena. By T. St rktjull Wright, 



M.D. 



Dr Wright stated that as far as concerned the Euglenas, 

 which Dr Macadam had found in the Water of Leith, it 

 was at present the general opinion of naturalists that these 

 organisms belonged to the Pliytozoa, and, like plants, were 

 attracted by light, and gave off oxygen gas. He stated 

 that chlorophyll, or the green colouring matter of leaves, 

 was found to exist largely in them. This chlorophyll, how- 

 ever, was found by Angstroon, who had examined it by 

 spectrum analysis, to be identical with that contained in 

 confervse and other green algae, but different from the 

 chlorophyll of phanerogamic plants. Dr Wright then gave 

 a sketch of the physiology of Euglena. 



IV. A Specimen of the Smew, Mergus albellus, shot in Haddingtonshire, 



was exhibited by John Alex. Smith, M.D. 



The Smew, a line adult male, was shot at Tynningham in 

 the first week of February. Its stomach was found to be 

 filled with minnows. Dr Smith was indebted to Mr Small, 

 George Street, for exhibiting the specimen. Some four 

 years ago another specimen of this rare visitor was shot in 

 the month of January in the same locality. 



Wednesday, March 22, 1&G5. — David Page, Esq., President, in the 



Cnair. 



The following Donations to the Library wero laid on the table, and 

 thanks voted to the Donors : — 



1. Proceedings of the Royal Society, London. Vol. XIII. Nos. 69 

 and 70, 1864. — From the Royal Society. 2. (1.) On the Presumption of 

 Survivorship; (2.) On the Relations, Structure, and Function of the Valves 

 of the Vascular System in Vertebrata. — By James Bell Pettigrew, M.D., 

 Edinburgh. — From the Author. 3. The Canadian Journal of Industry, 

 Science, and Art, New Series, No. 54, November 1SG4. — From the 

 Canadian Institute, Toronto. 4. Jahrbuch der Kaiserlich-Kdniglichen 

 ( reologischen Reichsanstalt, 1864. XIV. Band, Nro. 1. Jan.. Feb., 

 Mar. — From the I. R. Geological Society of Austria. 5. (1.) Transac- 

 tions of the Royal Society of Edinburgh. Vol. XXIII. Tart o, Session 

 1863 04; (2.) Proceedings of the Royal Society of Edinburgh. Ses- 

 sion L863-64. From the Society. 



