﻿230 Reviews — The PalcBontographical' Society. 



novelties of this memoir, wliich is illustrated by five plates (by 

 George West) very full of excellent figures of these small fossils. 



III. Another instalment (No. 2) of Dr. Lycett's " Monograph of 

 the British Fossil Trigonise " concludes this Fasciculus, with his 

 careful and valuable account of these interesting fossils, chiefly 

 "Undulatge," with some " OlavellatiB " and some "Glabra," and with 

 ten exquisite plates of Jurassic Trigonice, drawn by P. Leckerbauer, 

 in Paris. 



3. — MONOGKAPHS OF THE PALiEONTOGRAPHICAL SOCIETT FOR 1875. 



Vol. XXIX. 



THE study of fossilized organic remains has an ever-increasing 

 interest, — to the geologist, because thereby he gets the means 

 of distinguishing one set of strata from another, more and more defi- 

 nitely according to the exactness by which the remains of successive 

 creatures are discriminated, — to the biologist, because more and more 

 of the missing links of the organic world in all its stages are brought 

 to light, — and to the general observer, because he wishes to know, 

 for knowledge sake, what manner of ci'eatures were the animals or 

 jilants whose only relics are obscurely enwrapped in the fossiliferous 

 clay or stone which comes under his notice. 



The volume of Monographs (vol. xxix.) issued by the Pal^onto- 

 graphical Society for 1875 comprises 1st, a communication (Part 

 iv.) of Mr. Binney's well-illustrated monographic study of the 

 Plants found in the Coal-measures of Great Britain. Sigillaria and 

 Stigmaria are the special objects in hand, and are elucidated by 

 numerous microscopic observations on slices of well-preserved speci- 

 mens from the author's rich collection, and beautifully drawn by 

 Fitch. He here gives a bibliographic summary of the present state 

 of our knowledge on the structure of Sigillaria and allied plants 

 (Anabathra, Diploxylon, etc.) ; together with further information on 

 Sigillaria vascularis, Binney, a description of a Stigmaria agreeing 

 with that plant in structure, and special notes on the base of Sigil- 

 laria and the rootlets of Stigmaria. 



2nd. — Dr. Wright's continuation of his Cretaceous Echinodermata, 

 such as the EcJiinoconida:, Echinonidce, Echinohrissidce, EcJdnolampidce, 

 and Spatangidce ; these are illustrated by many excellent figures by 

 the late C. Bone. 



3rd. — Part 3 of Dr. Lycett's Monograph on the British fossil 

 Trigonice (beautifully drawn by Leckerbauer). Like the foregoing, 

 this is very welcome to British palaeontologists, whether they wish 

 to have the natural history and synonymy of these important 

 groups soundly settled, or to be able to arrange their specimens 

 systematically in their cabinets. 



4th. — The remains of Bothriospondylus from the Forest-marble and 

 the Kimmeridge Clay enable Prof. Owen to demonstrate the presence 

 of true Saurian, and absence of Ornithic characters in this great 

 Eeptile. The short Monograph on the genus Cetiosaurus, pp. 27 — 

 43, concentrates and criticizes what has been hitherto published on 

 this great aquatic Dinosaur, as exemplified by the magnificent 



