34 Reviews — Seeley^s Index of Fossil Birds and Reptiles. 



and from whicli area volcanic action was not absent, — these old seas- 

 contained a varied fauna, poor in the Cambrian, with its worm- 

 bxirrows and doubtful zoophytes, but rich in the Lower and Upper 

 Silurian strata, with their numerous invertebrata (Trilobites, Grapto- 

 lites, Crinoids, Brachiopods), and the still higher Devonian, rich in 

 corals, molluscs, and fishes. 



The rough estimated value of English and Welsh slates is about 

 £100,000 per annum, N.Wales yielding more than 350,000 tons- 

 annually, and giving employment to nearly 10,000 persons, — 60,000 

 tons either as slabs or slates being sent to London alone. 



Mr. Pattison's pamphlet may be fairly commended to the geolo- 

 gical student and general reader. J. M. 



in. — Index to the Fossil Eebiains op Aves, Ornithosaueia, and- 

 Keptilia from the Secondary System of Strata, arranged in 

 the woodwardian museum of the university of cambridge. 

 By Harry Govier Seeley, F.G.S. of St. John's College, Cam- 

 bridge. With a Prefatory Notice by the Eev. Adam Sedgwick, 

 LL.D., F.E.S., Woodwardian Professor and Senior Fellow of 

 Trinity College. Deighton, Bell and Co., Cambridge. 1869. 



THIS is the first of a series of guides for students, to assist them in 

 making a profitable use of the extensive collections accumulated 

 tinder the auspices of the venerable Professor of Geology. In the- 

 Prefatory Notice, the Professor commences by narrating how the 

 Keptiles, Birds, and Pterodactyles came into the possession of the 

 University, the number of which is estimated in the last report of the 

 Museum Syndicate to be about 5150 specimens from the Secondary 

 Eocks alone. Prof. Sedgwick warmly thanks those who have by 

 their gifts enriched this department of the Museum. He also' 

 observes that those only can comprehend the great scientific labour 

 bestowed upon the specimens by the author of the Catalogue, and the 

 value of his conclusions, who have themselves previously studied the- 

 details of this difficult department of Palasontology. 



The Index commences with a Table of the distribution of the- 

 animals in the Secondary strata, and the groups which they each, 

 contain. Then follows an approximate list of the species in the 

 Museum, viz. : — Chalk, 8 species ; Cambridge Greensand, 70 species ;. 

 Gault, 2; Wealden, 12 ; Purbeck, 7; Potton Sands, 18; Portland, 

 1 ; Kimmeridge Clay, 10 ; Coral Eag, 3 ; Oxford Clay, 8 ; Lower 

 Oolites, 4 ; Lias, 20. And of foreign reptiles, 15 species from the- 

 Trias, and 9 species from the Solenhofen slate. 



A Table of the groups of the animals included in this Catalogue 

 follows, arranged thus : — OrnWiosaiiria, Aves, Dlnosauria, Dicijno- 

 dontia, Ichthyosauria, Crocodilia, Plesiosauria, Chelonia, LacertiUa, 

 and Ophidia. The Secondary Strata of the South of England and. 

 those of the East of England are given in j)arallel columns. Mr. 

 Seeley places the Hunstanton Eed Eock a little above, and the- 

 Cambridge Greensand a little below, the Upper Greensand of the-. 

 South of England. We now arrive at the detailed list of the speci- 



