422 Notices of Memoirs. 



rock generally. This is illustrated. He refutes the view that they 

 were of fresh-water origin, and supposes that the contained organic 

 remains have been destroyed, with the exception of the annelid 

 burrows, which he points out are invariably the last things to 

 disappear from percolated sandstones. John Smith has a paper on 

 the Barite veins of south-west Scotland, which mineral he regards 

 as probably an exfiltration product, leached out of the rocks by 

 water, and afterwards re-deposited by the same agent in the veins, 

 but he cannot yet say which of the rocks it was originally derived 

 from. The same writer has a note on the ' China-clay ' mine and 

 the Water-of-Ayr stone bed at Troon, and gives some details of 

 localities for radiolarian cherts in Scotland. Two other papers from 

 his pen are " The Permian outlier of the Snar Valley, Lanarkshire " 

 and " Spango Granite," the boulders of which latter he considers 

 were weathered into shape and ready for transport long before the 

 Glacial Epoch. The other original papers, which are all in abstract 

 only, are : Goodchild, the Dolerite of Aberdour ; Macnair, the 

 problem of the marginal Highlands ; Smith, detached microliths 

 from the Pitchstone Sill at Corriegills (in full, with a plate) ; 

 Ballantyne, a Bute post - Glacial shell - bed ; Cowie, Glacial 

 phenomena of Loch Eanza Glen, Arran ; and Home, the Silurian 

 Volcanic rocks of the southern uplands of Scotland. 



X. — Geology in Norfolk. — There are only two papers on 

 Norfolk Geology in the Transactions of the Norfolk and Norwich 

 Naturalists' Society, vol. vii, pt. 2, 1901. The first, by F. D. Longe, 

 is on the formation of flints in chalk. The second, by Professor 

 Newton, records the occurrence of bones of the common Crane, from 

 peat, obtained so long ago as 1867-69, while excavating the 

 Alexandra Dock at Kings Lynn. These bones show a remarkable 

 variation in size of the tibia3. In the course of his examination of 

 the Woodwardian Museum collections for purposes of comparison, 

 Professor Newton found a right tarso-metatarsus of the Pelican, 

 which further confirms his own and Dr. C. W. Andrews' statement 

 that the Pelican was once a native of the Fens in this country. 



XL — The Geological Distkibution of Extinct British Non- 

 Marine MoLLUSCA. — E. BuUen Newton contributes a valuable 

 paper on this subject to the Journal of Conchology. He shows at 

 a glance the geological range of every recorded species of terrestrial 

 and fluviatile shells, excluding only those with manuscript names, or 

 any forms insufficiently described, from the strata of the British 

 Islands. In his list, as no synonymy is attempted, he has introduced 

 the original generic name under which the shell was described, and 

 gives a bibliography of the subject. From a note appended to his 

 paper, we learn that this list was lent to another person for 

 incorporation in a recent publication, but on reference to that 

 publication we find that Mr. Newton's generosity has been studiously 

 ignored by the author in his preface, though the list has apparently 

 been extensively used. 



