Journal of conchology . ee for all, £1 are held, by kind permission, in the apartments of the Linnean Society, Burlington House, Piccadilly, W., on the Second Friday va !a. month from November : Three numbers a year are free to all Members. *>* Back Numbers may be obtained on application to iht Hon. Sec. Membtrs receivea discount of 20%. The Lancashire & Cheshire Naturalist A Monthly Journal of Natural History and Microscopy for the Counties of Lancashire and Cheshire, and for the adjacent districts of Derbyshire, Westmorland, North Wales & the Isle of Ma
Journal of conchology . ee for all, £1 are held, by kind permission, in the apartments of the Linnean Society, Burlington House, Piccadilly, W., on the Second Friday va !a. month from November : Three numbers a year are free to all Members. *>* Back Numbers may be obtained on application to iht Hon. Sec. Membtrs receivea discount of 20%. The Lancashire & Cheshire Naturalist A Monthly Journal of Natural History and Microscopy for the Counties of Lancashire and Cheshire, and for the adjacent districts of Derbyshire, Westmorland, North Wales & the Isle of Man. Edited by W. M. TATTERSALL, ,Assisted in Special Departments by Competent Referees. Annual Subscription, 8/6 post free, should be sent direct to the Editor,Dr. W. M. Tattersall, Manchester Museum. EXCHANGE COLUMN. COLONEL F. S. BOWRING, Hurstmead, Chislehurst, has specimensof about 8o varieties of ClausUia, 25 of Bulimus, and 20 of Helix, fromCrete and the Eastern Mediterranean, to exchange for ^ ,,^ i65 JOURNAL OF CONCHOLOGY. Vol. i6. JUNE, 1921. No. 6. CENSUS OF THE DISTRIBUTION OF BRITISH LANDAND FRESHWATER MOLLUSCA. By the late W. DENISON ROEBUCK. the printed records of the Society it is not very clear whenRoebuck began a systematic record of the distribution of Britishland and freshwater moUusca, but he used to reckon himself (, v, p. 200 ; vi, 314) that the census began in 1877, and thefirst entry in the books was made on 25th October, 1876. Theyshow plenty of fresh entries up to the end of 1918, so that the datasummarised here are the product of forty-two years work. For thefirst three years or so the project was practically confined to York-shire, but at the sixty-fifth meeting of the Society, held in Leeds inthe early part of 1881, Roebuck read a paper {^Journal, iii, p. 138)on a proposed system of conchological locality records, in whichhe advocated that the Conchological Society should commence asystem of recording the
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Keywords: ., bookauthorconcholo, bookcentury1800, bookdecade1870, bookyear1879
