Bibliographical Notices. 193 



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

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

 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 due to the energy and 

 acumen of W. H, Iludleston, and incorporated in this work, thus 

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

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

 the very limited and condensed 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 Shcrboru's ' Catalogue of 

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

 viewed in the Ann. & Mag. Nat. Hist. ser. G, vol. v., 1890, pp. 3y7 

 &c. Such trustworthy exegetical 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 



alienee in looking for the history of known species and for the 

 probable relationshijjs of newly-found fossils. 



Ihe Jurassic Rochs of the Neir/hbourhood of Oamhrich/e. By the 

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

 Clay and Sons. London, 1892. 



Ibis 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 whicli he had advanced with care and perspicuity. 

 Lamenting his death and desirous that his good work should not 

 be lost sight of, some of his colleagues in the Woodwardian Museum 

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

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

 a geologist whom his many friends highly respected and wish to 

 honour. 



The Ooliles 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 Paloeozoic 

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

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

 of the Oolitic atrata 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 



Ann. t& Mag, A Hist. Ser. 6. Vol. xi. 14 



