10 THE ECOLOGY OF ANIMALS 



individuals who carry out ecological work. Thus, 

 the full collections of the Great Barrier Reef Expedi- 

 tion 1928-29 have been placed on permanent record, 

 with their ecological labels, in the British Natural 

 History Museum. It is a considerable advantage also 

 to deposit with such collections copies of the complete 

 notes concerning the survey, since these can seldom 

 be published in full. 



In the British Isles the first considerable ecological 

 surveys were undertaken by the Scottish Bathy- 

 metrical Survey in 1895-1904, during which James 

 Murray (1910) collected as a side-line the freshwater 

 animals from various Scottish lochs. This work has 

 also been summarized and discussed by Scourfield 

 (1908). Later freshwater surveys were undertaken by 

 other workers on Rostherne "/lere in Cheshire (verte- 

 brates by Tattersall and Coward, 1914) ; in the 

 Enghsh Lake District (Pratt, 1898 ; Gurney, 1923) ; 

 in Lough Neagh (Dakin and Latarche, 1913) and 

 Lough Derg and also the River Shannon in Ire- 

 land (Southern and Gardiner, 1926) ; in Yorkshire 

 rivers (Percival and Whitehead, 1929 and 1930) ; and 

 in Welsh streams and rivers (Carpenter, 1927). As 

 part of studies connected with water pollution, 

 surveys have been done in the River Lark in East 

 Anglia (Butcher and others, 1930) and in Welsh 

 streams (Carpenter, 1924 and 1925), and elsewhere. 

 The estuarine surveys to be mentioned overlap into 

 freshwater in several instances. These estuarine 

 surveys include the Tamar and Lynher in Devonshire 

 (Percival, 1929), the Tyne plankton (Jorgensen, 

 1928), the Mersey (Eraser, 1932), and considerable 

 studies of the Tay and the Tees undertaken by 

 investigators working for the Water Pollution Re- 

 search Board. In regard to the last, a summary of 

 the animal communities of the Tay estuary has 

 already been published (Alexander, 1932). Walton 

 (1913) surveyed the intertidal animals on the shores 

 of Cardigan Bay in Wales. 



