148 Notes and Comments. 



to the List of Durham Diptera by the Rev. W. J. Wingate, 

 which originally appeared in The Naturalist, and was subse- 

 quently published in an extended form by the Northumberland 

 Society. We hope and believe that Mr. Grimshaw's address 

 wa^ not delivered quite in the form in which it is published. 



REPORT ON CETACEA. 



We have received from the British Museum, Natural 

 History, Dr. S. F. Harmer's ' Report on Cetacea Stranded on 

 the British Coasts during 1916,' this being the fourth report, 

 and is sold at is. 6d. Notwithstanding the adverse conditions 

 for observation which now exist, some interesting records have 

 been made, including ' A Cuvier's Whale, Ziphius cavirostris, 

 believed to be the first specimen of this species recorded from 

 the English Coast ; A Sowerby's Whale, Mesoplodon bidens, 

 from Lincolnshire ; A White-sided Dolphin, Lagenorhynchus 

 acutus, a common northern species which has seldom been 

 recorded from British seas ; a Young Sperm Whale, Physeter 

 catodon, with uncut teeth and presumably a " sucker ; '•' a 

 Killer or Grampus, Orcinus orca, of exceptional and perhaps 

 record size.' There are illustrations of the Killer from Colvend 

 (South Scotland), and also a map showing the localities of 

 the various specimens stranded during the year. 



SANDS FOR GLASS MAKING. 



As was shown in the report of the meeting of the British 

 Association at Newcastle, the economic value of scientific work 

 is being forcibly recognised in these days. We have already 

 referred to special memoirs being issued by the Geological Sur- 

 vey, bearing upon minerals, etc., which are of special importance 

 at the present time. From Messrs. Longman, Green & Co., we 

 have received a memoir ' Published at the Instruction of the 

 Ministry of Munitions of War, by the Imperial College of 

 Science and Technology. A Memoir on British Resources 

 of Sands suitable for Glass-making, with notes on certain 

 crushed rocks and refractory materials. By P. G. H. Bos well. 

 With Chemical Analyses by H. F. Harwood and A. A. 

 Eldridge (92 pp., 1/6).' It deals with the uses, nature, com- 

 position and distribution of sands, the process of glass-making, 

 and gives details of localities in England where suitable sands 

 occur ; in Yorkshire at Huttons Ambo, Burythorpe, Guiseley 

 and South Cave ; at Spital, in Cheshire, and other localities in 

 Derbyshire, etc. 



DERBYSHIRE CARBONIFEROUS LAVAS. 



At a recent meeting of the London Geological Society 

 Mr. H. C. Sargent read a paper ' On Spilitic Faces of Lower 

 Carboniferous Lava-flows in Derbyshire.' The President 

 (Dr. Alfred Harker) welcomed this contribution to the petrology 

 of the Carboniferous lavas. The interesting alkaline types 



Naturalist, 



