CONTENTS. 



PAGE. 



The Study of Natural History conducive to Health. By T. 



Fulleb. Esq 21 



Addenda to Bird-retreating. By George R Twinn, Esq 24 



On Birds using Oil from Glands, for the purpose of lubricating 



the surface of their plumage. By T. Fuller, Esq 25 



On Unity of System 27 



A Peep at the Ferns etc., of Sutherland and Ross. By W 29 



Miscellaneous Notices. — Grey Phalarope. Ringtail Harrier. 



Merlin. Little Auk. Little Grebe. Scarcity of Birds in hard 



weather. The Knot. Landrail. Skylarks. Starling & Blue Tit. 32 



Reviews. — A Simple Catechism of the Animal, Vegetable, and 

 Mineral Kingdoms. By Charlotte O'Brien. London: Relfe, 



Brothers. Prize Essay on the Prevention of the Smoke 



Nuisance. By Chari.es Wye Williams. London : John Weale, 



59, High Holborn.' Hours of Sun and Shade, Reveries in 



Prose and Verse. By Percy Vernon Gordon de Montgomery. 



London: Groombridge and Sons. Edinburgh: Hogg. The 



Natural History Review. London: Highley. Edinburgh: John- 

 stone and Hunter. Dublin: Hodges and Smith 34 



Exchange. — Algas. British Eggs 38 



Proceedings of Societies. — Thirsk Natural History Society 38 



The Querist. — The Chimney Swallow. Vegetable Caterpillar from 

 New Zealand. Substance used to represent Snow and Ice. The 

 Heratical Subject 39 



Obituary. — Death of Mr. David Dyson 43 



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