122 Reviews— The Palceontocfraphical Societfs Monographs. 



and is also introduced, as a woodcut in the letter-press, to sh.ow the 

 distinction of the power of rain from that of running water. 



II. — Monographs Published by the PALiEONTOGRAPHicAL Society : 

 Vol. XIX. 3866. 



THIS fasciculus of Monographs, and parts of Monographs, is 

 supplied to the members of the society as the volume due for 

 1865 ; thus, the issue of annual volumes is now only one year 

 behindhand. Tliis A^olume comprises : — 1. Part of a Monograph of 

 the Foraininifera of the Crag, by Messrs. Jones, Parker, and Brady. 

 2. Part I. of Dr. Duncan's Monograph of the British Fossil Corals ; 

 second series. 3. Portion of Mr. H. Woodward's Monograph of the 

 British Fossil Merostomata (Pterygotus, etc.). 4. Part YII. No. 1, of 

 Mr. Davidson's Monograph of the British Fossil Brachiopoda. 

 Thirty-five plates richly illustrate the numerous fossils described in 

 this volume. 



The first of the Monographs, above-mentioned, is concerned with 

 a group of organisms, extremely abundant in the fossil, as well as 

 in the recent state, but which had not hitherto been the subject of 

 any of the Paleeontographical Society's Monographs. We not only 

 welcome this memoir, but rejoice to see that there is an intention to 

 give the Cretaceous, and the Liassic Foraminifera also, a place in 

 this fine repertory of British Fossils, according to the Society's List 

 of Monographs in Preparation. 



To those who have a definite notion of the value these low-classed 

 and variable Microzoa have in paleeontological geology, the Intro- 

 duction to the Monograph of the Foraminifera of the Crag will 

 afford good data for conclusions, in its concise account of the groups 

 peculiar to the several zones of the Crag ; and the Monograph itself 

 (as far as it is brought out) evidently aims at supplying the zoologist, 

 as well as the geologist, with both special and general information 

 about these minute shells, supplementing to a great extent, the 

 elaborate and broadly treated description of the Arctic and Sub- 

 arctic groups of recent Foraminifera, by Messrs. Parker and Jones, 

 in the "Philosophical Transactions" of 1865, to which this Mono- 

 graph makes frequent reference. The bibliography and comparison 

 of the so-called genera and species appear to have been especially 

 cared for ; and the results are remarkable, both, in the long lists of 

 synonyms, such as could only be offered to the public in the works 

 of a Society, and in the bold and systematic compression of numerous 

 individual and varietal forms around very few types. After all, in 

 the elaborate lists, showing relationship, distribution, and relative 

 abundance and size, 102 species and noticeable varieties are enu- 

 merated as having been found in the Crag of Suffolk, chiefly by 

 Mr. Searles Wood, whose name is indissolubly associated with the 

 Crag and its fossils. 



Dr. Duncan offers his Monograph on the Fossil Corals as a 

 Supplement to the great Monograph by Messrs. Edwards and 



