230 
Reviews — The Palceontographical Society. 
novelties of this memoir, which is illustrated by five plates (by 
George West) very full of excellent figures of these small fossils. 
III. Anotber instalment (No. 2) of Dr. Lycett’s “Monograph of 
the British Fossil Trigoniae” concludes this Fasciculus, witli his 
careful and valuable account of these interesting fossils, chiefly 
“Undulatas,” with some “ Clavellatae” andlsome “Glabrae,” and with 
ten exquisite plates of Jurassic Trigon ise, drawn by P. Leckerbauer, 
in Paris. 
3. — Monographs of the Paljsontographical Society for 1875. 
Yol. XXIX. 
IIE 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 frorn anotber, 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 worid in all its stages are brought 
to light, — and to the general observer, because he wishes to know, 
for knowledge sake, what manner of creatures were the animals or 
plants 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 Palseonto- 
graphical Society for 1875 comprises Ist, a communication (Part 
iv.) of Mr. Binney’s well-illustrated monographic study of the 
Plants found in the Coal-measures of Great Britain. Sigülaria and 
iStigmana are the special objects in hand, and are elucidated by 
numerous microscopic observations on slices of well-preserved speci- 
mens from the author’s rieh collection, and beautifully drawn by 
Fitch. He here gives a bibliographic summary of the present state 
of our knowledge on the structure of Sigülaria and allied plants 
( Anabathra , Diploxylon, etc.) ; together with further Information on 
Sigülaria vascvlaris, 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 contiuuation of his Cretaceous Echinodermata, 
such as the Echinocomdee, Echinonidce, Eclnnobrissidce, Ecliinolamj)idce, 
and Spatangid.ee ; these are illustrated by many excellent figures by 
the late C. Bone. 
3rd. — Part 3 of Dr. Lycett’s Monograph on the British fossil 
Trigonia (beautifully drawn by Leckerbauer). Lilce the foregoing, 
this is very welcome to British palseontologists, whether tliey 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 Bothriospondylm 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 
Reptile. The short Monograph on the genus Cetiosaurus, pp. 27 — 
43, concentrates and criticizes what has been hitherto published on 
this great aquatic Diuosaur, as exemplified by the magnificent 
