152 



Allium. A species -with tall scape and rose-colored flowers. Speci- 

 mens too imperfect for identification. 

 Streptojnis amplexifolius, DC. July 9. Common. 

 S. roseus, Mich. June 25. Common. 

 Zygadenus glaucus, Nutt. July 23. Very common. 

 Tqfieldia palustris, Hudson. July 1 7. Marsh near Ellis Bay. 

 T. glutinosa. Aug. 5. Grassy banks. Very common. 

 Carex Hmosa, L. 

 C. aurea, Nutt. 



Eriophorum russeolum. July 1 7. Ellis Bay. 

 E. vaginaium, L. July 1 7. Ellis Bay. 

 E. polystacTiyon, L. 

 E. alpinum, L. 



Elymus mollis., Trin. (Goose grass.) Abundant. 

 Hierochloa borealis, R. and S. June 25. Common. 



Mr. F. H. Storer exhibited a specimen showing the pseudo- 

 metamorphism of cast-iron into plumbago, proving that iron 

 is not, as might be supposed, a homogeneous mass ; the 

 plumbago had first been diffused through the mass, from 

 which the iron had been afterwards removed by immersion 

 for a long time in dilute acid. The casting came from Mr. 

 Homer, of the Pacific Mills, Lawrence. 



The following letters were read, viz : — 



From the Royal Institution, September 12th, 1861; the Liverpool 

 Literary and Philosophical Society, October 21st, 1861 ; the Natur- 

 historisclier Verein, Bonn, January 22d, 1862, and the Regents of 

 the University of New York, Albany, May 31st, 1862, acknowledging 

 the receipt of the Society's publications ; from the K. Preussiche 

 Akademie, Berlin, February 18th, 1862, presenting its Monthly Jour- 

 nal for 1861. 



Mr. E. H. Eldredge was elected a Resident Member. 



DONATIONS TO THE MUSEUM. 



April 16. A specimen of Pocillopora from the isthmus of Panama, by Mr. 

 Charles F. Watts. 



May 7. A collection of plants from the Arctic regions, by Dr. 1. 1. Hayes. 



May 21. A collection of upwards of one thousand species of the plants of 

 New England ; a collection of plants of Minnesota ; a large number of the nests 

 and eggs of the birds of New England ; a collection of Indian antiquities, con- 

 sisting of stone implements of art and warfare, mostly from Concord, Mass., 

 by the bequest of Mr. H. D. Thoreau; specimens of Crioceris asparagi from 

 Fall Eiver, by Mr. Norman Easton ; two Exoccetus and two Echeneis from New- 



