Proceedings of the Wernerian Natural History Society. WB 
was read, entitled, ‘‘ Hints on the subject (^Dreaming, and on 
the O'perations of the Mind in T)r earning^’' 
The following Donations have been presented to the Society : 
The Transactions of the Horticultural Society of Londony 
4 vols. 4to. Presented by the Society. 
Specimens of Osseous Breccia found in levelling the ground 
near to flosia in Gibraltar, for the purpose of erecting a ball 
court for the soldiers. Presented by Lieutenant Macniven 
of the 26th Regiment 
Memoirs of the Cambridge Philosophical Society y vol. i. part ii. 
Presented by the Society. 
Additional Numbers of the Flora Batava. By his Majesty 
the Ring of the Netherlands. 
Memoirs (f the Astronomical Society of Londony vol. i. Pre- 
sented by the Society. 
Professor Shumacher’s Astronomische Nachrichten. Presented 
by the Author. 
Translation of Berzelius’s Work on the Blowpipe. Presented 
by J. G. Children, Esq. 
A part of the Book-Case of Sir Isaac Newton. Presented by 
John Robison Esq. 
Art. XXXI. — Proceedings of the Wernerian Natural History 
Society. (Continued from Vbl. VI. p. S74.) 
1822, Feb. 9. T- HE Secretary communicated the substance of 
a memoir by Mr David Don, curator of the Lambertian ^Hejba- 
rium, on a small family of plants, which he has called Didymo- 
carpeae. (This memoir is printed in the present number of this 
Journaly p. 82. et seq.) He also read descriptions of two re- 
markable varieties of Nuphar luteay or the yellow water-lily, 
found in the Corby Loch, near Aberdeen, communicated by 
Mr William Maegillivray. 
Professor Jameson then read the second part of M. Bou^s 
paper on the Igneous Origin of Granite and Trap-rods. 
Feb. 23. Mr R. K. Greville read the first part of a paper 
entitled, ‘ ‘ A new arrangement of the Genera of Mosses y accord^ 
