Relation to Environment 



will form an important part of the account given of it, including 

 notes on its Habits and Life History, whether in a state of nature 

 or in captivity, the Habitats which are most congenial to it, its 

 favourite Food, the Parasites of which it is the victim, the Use s to 

 which it is put, whether in medicine or the arts, the Popular 

 Superstitio7?sWi\h which it is connected, or the Vernacular Names 

 (in all tongues) which have been imposed upon it. The account 

 of its distribution will involve also the consideration of its Range 

 in Altitude, and the heights to which it ascends or descends in 

 different climates; of the Relation of Soil and Climate, and such 

 other factors as go to determine its geographical position, as 

 well as of the nature and amount of influence exercised in the 

 same direction by the Geological Conformation of the district 

 which it inhabits. 



The work is in short intended to view the subject elaborately 

 and completely from every possible standpoint. No part of the 

 subject will be avoided on account of its diffi.culty or the incom- 

 pleteness of our knowledge; for in addition to giving a full 

 statement of what is known, it is proposed to bring out into 

 strong relief what is not known, as little further progress can 

 be achieved in science without a clear and accurate idea of the 

 direction in which future investigation should tend to be of most 

 service. It only remains to say that the result will very largely 

 depend on the liberality and heartiness of the co-operation 

 received from Naturalists generally, upon whom we confidently 

 call for assistance, hoping they will bear in mind that isolated 

 and seemingly insignificant facts often prove of considerable and 

 unexpected value. The best return possible will be made for 

 assistance received, and all observations will be conscientiously 

 attributed to their respective observers. 



Communications of all kinds, letters, specimens, books, &c. 

 should for the present be forwarded to care of Mr. J. W. Taylor, 

 Office of the Journal of Conchology, Leeds. 

 May, 1883. 



[It would be a great convenience if notes and observations were 

 w^ritten only on one side of the paper.] 



