372 Notes and Comments. 



Perturbations in Modern Physical Philosophy, by Sir Oliver 

 Lodge ; Newton and the Colours of the Spectrum, by R. A. 

 Houstoun ; Dispersoidology and the Theory of v. Weimarn, 

 by S. C. Bradford ; The Nature of Sun Spots, by Rev. A. L. 

 Cortie. This pait contains nothing from the pen of Mr. J. 

 Reid Moir, but in his place Mr. W. J. Abbott writes on Pre- 

 historic Classification. Judging from a table given on page 

 280, prehistoric remains are now, according to Mr. Abbott, to 

 be classified as follows : — Last Hastingian, Azilian, Kemsingian, 

 First Hastingian, Fairlightian, Cissburian, Ebbsfleetian, Pres- 

 wichian, [surely the word should be Pres^wichian, if used at 

 all?], Oldburian, Upper Ashian ?, Strepyan ?, Fawkhamian, 

 Meridionalis Gravels, Norwichian, Ipswichian, Mesvenian ?, 

 Mafflien ?, Rutelian, Lower Ashion, Stanstedian, Suttonian. 

 We fear, however, that this somewhat complicated system is in 

 a nebulous state at present. 



HUDDERSFIELD NATURALISTS. 



We are glad to see that the Huddersfield Naturalist and 

 Photographic Society continues to publish its Annual Report, 

 and has a substantial sum in the hands of the Treasurer. 

 That for 1917 is a useful summary of the natural history work 

 in the district during the previous year. Mr. C. Mosley's 

 ' Natural History Report ' refers to interesting lectures by 

 H. E. Wroot, J. R. Simpson, W. Falconer, F. Rhodes and A. 

 Gilligan. There is an antiquarian report by J. H. Carter 

 and F. Lee ; Mr. A. Dean reports on Mammals, Mr. E. Fisher 

 on Birds, Mr. C. Mosley on Entomology, Mr. W. E. L. Wattam 

 on Botany, Dr. Woodhead on Geology, and Mr. G. H. Charles- 

 worth records Valvox globator on Almondbury Common. Mr. 

 G. T. Porritt refers to the abundance of Sciaphila conspersana, 

 S. pascuana, Charceas graminis, Tanagra atrata, Boarmia 

 geminaria, f I alia waveria and Abraxas grossulariata. There 

 are obituary articles of A. W. Whiteley and J. Cook, and a 

 plate contains two interesting blocks of local interest from 

 The Naturalist. 



BEDFORDSHIRE. 



The Cambridge University Press continues to publish its 

 valuable county geographies at the low price of is. 6d. each, with 

 coloured Geological and Physical maps, and numerous illustra- 

 tions in the text ; bound in a good cloth cover. The latest 

 issued is entitled ' Bedfordshire,' and is by C. G. Chambers 

 (195 pp.). It is based on the familiar plan, and the chapters 

 of particular interest to our readers are those dealing with 

 Surface and General Features, Rivers, Geology, and Natural 

 History. From the geographical position of the county, and 

 the nature of many old-time industries still existing, this 

 Bedfordshire volume quite equals in interest any that have so 

 far been published. 



