BihUographical Notices. 193 



notice in a well-printed Catalogue. This is worthy of the attention 

 and well fitted to the use of geologists, whether working earaestly 

 in the details of the science or taking up the pleasures of " col- 

 lecting " at a given locality or in a given formation. 



The abundant fruits of research among the British Jurassic Gaste- 

 ropoda during the last forty years, largely duo to the energy and 

 acumen of AV. H. lludleston, and incorporated in this work, thus 

 occupy 120 pages in the new Catalogue, whilst 55 jjages of' Morris's 

 Catalogue' served for all tlie known fossil Gasteropoda of Britain ; 

 the very limited and cnndeiiscd references, however, in the latter 

 somewhat affect the comparison. 



It is to be hoped that the scientific public will liberally support 

 the publication of such excellent catalogues of the British Fossils as 

 the book under notice and Woodward and Sberboru's ' Catalogue of 

 British Vertebrates,' brought out by the same publisher, and re- 

 viewed in the Ann. & Mag. Xat. Hist. ser. 6, vol. v., 1890, pp. 3:37 

 ftc. Such trustworthy cxegetical catalogues of fossils as these are 

 much wanted. They clear the way for students and others ; they 

 do much for the avoidance of error ; and they save loss of time and 

 a'.ience in looking for the history of known species and for the 

 probable relationships of newly-found fossils. 



Ihe Jurassic Rocks of th' Xe'vjhbo>n-1iood of Camhrid(/e. By the 

 late Thomas IIoberts, M.A., F.G.S. 8vo. Pp. vii and 96. C. J. 

 Clay and Sons. London, 1892. 



Inii memoir was the "Sedgwick Prize Essay" for 1886. The 

 Author, who had collected and discussed so many useful points in 

 the distribution and natural history of these Jurassic strata, unfor- 

 tunately died, at an early age, whilst adding new facts and perfecting 

 the views which he had advanced with care and perspicuity. 

 Lamenting his death and desirous that his good work should not 

 be lost siij;ht of, some of his colleagues in the Woodwarditui Museum 

 and ctKer friends have put together the notes that he left and have 

 brought cut this Prize Essay, so enriched, as a lasting memorial of 

 a geologist whom his miiny friends highly respected and wish to 

 honour. 



The Oolites of Cambridgeshire and northwards differ from those 

 of the south in several particulars, on account of the two series 

 having been laid down on and against a ridge or ridges of Palaeozoic 

 rocks, making shoals in the sea of the Jurassic period, and trending 

 north-easterly and then northerly. Hence not only doss the strike 

 of the Oolitic strata vary in the East- Anglian district, but their 

 constituent deposits vary in character, both according to the local 

 depths of the sea and the kinds of material supplied by the organic 

 remains, and ty the sediments brought from the shores. Thus 

 '• throughout the greater part of the period the deposits were laid 



Ajin. ct- Mag, A Hist. Ser. 6. VoK xi. 14 



