Xll PROCEEDIXGS OF THE 



how the word " early " was applied to the singing of the thrush on the 2.5th of 

 December. He had noticed the extraordinary manner in whicli the thrush was 

 singing at the present time, and had never noticed such a thing before. 



Mr. Hopkinson explained that if certain plants, such as the snowdrop, which 

 usually flowered in January, came out before January, he should consider that 

 they flowered unusually early; and so in the case of the birds, the thrush usually 

 began to sing early in January, but in the winter of 1875-6 it was first heard 

 near the end of December. He had entered it in the 1876 report, considering it 

 to be an unusually early phenomenon pertaining to that report, though in this 

 instance occurring a week before the end of 1875. 



Donations to the Libkaey in 1877. 



Title. Donor. 



Attfield, Prof. John. Chemistry: General, Medical, 

 and Pharmaceutical. 6th edition. 8vo. London, 

 1875 



Capel, C. C. Trout Culture. 8vo. London, 1877 



Gannett, Henry. List of Elevations West of the 

 Mississippi River. (U.S. Geol. Surv.) Svo. Wash- 

 ington, 1877 . 



Geographical Magazine. Vol. iv. 4to. London, 1877 



Henslow, Eev. J. S. Descriptive and Phy.nological 

 Botany. 8vo. London, 1839 . . . . 



Hitchcock, Prof. E. The Religion of Geology and 

 its connected Sciences. Svo. London, 1851 . 



Hudleston, W. H., and J. F. Walker. On the 

 Distribution of the Brachiopoda in the Oolitic 

 Strata of Yorkshire. {Proc. Yorkshire Fhilos. Soc. 

 1877) 



Jackson, W. H. Descriptive Catalogue of the Photo- 

 graphs of the United States Geological Survey of 

 the Territories for the years 1869 to 1875. 2nd 

 edition, (f. S. Geol. Surv.) Svo. Washington, 

 1877 



Jeffreys, Dr. J. Gwyn, and Dr. W. B. Carpenter. 

 The Valorous Expedition. 8vo. London, 1S76 . 



Lesquereux, Leo. Supplement to Fifth Annual Report 

 of the U. S. Geological and Geographical Survey 

 of the Territories. Report on Fossil Flora. ( U. S. 

 Geol. Suiv.) 8vo. Washington, 1877 . 



Lyell, Sir Charles. The Principles of Geology. 9th 

 Edition. Svo. London, 1853 



Marriott, W. Table for facilitating the determination 

 of the Dew-point from Observations of the Dry- and 

 Wet-bulb Thermometers. London, 1874 



. Remarks on the Reduction of Barometric 



Readings, with a form of Table for combining the 

 Corrections for Index Error, Temperature, and 

 Altitude. (Quart. Journ. Meteorological Soc. 187f>). 



Meteorological Society. Repoi-t of the Council for 

 1861. Svo. London, 1862 



Microscopical, Monthly, Journal. Vols, xv-xvi. 

 8vo. London, 1876 



Morris, Prof. J. The Geology of Croydon. 8vo. 

 Croydon, 1877 



Naturalist. Vols, i-iii. 8vo. London and Hudders- 

 field, 1865-67 



The Author. 

 Dr. A. T. Brett. 



Prof. F. V. Hayden. 

 Lieut. R. B. Croft. 



Mr. J. Hopkinson. 



The Authors. 



Prof. F. V. Hayden. 

 Br, Gwyn Jeffreys. 



Prof. F. V. Hayden. 

 Mr. J. Hopkinson. 



The Author. 



Dr. A. T. Brett. 

 Lieut. R. B. Croft. 

 The Author. 

 3[r. J. Hopkinson. 



