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REVIEWS OF NEW PUBLICATIONS. 
damaging the part of the city where the specimen was known to he deposited. 
The Canon, suspecting the cause of this favor, secreted his treasure in a vault; 
but when the city was taken, the French authorities compelled him to surrender 
his prize, which was conveyed to the Jardin des Plantes , at Paris, where it still 
remains. Whatever may be thought of the Canon, we cannot but consider that 
he had a perfect right to this celebrated fossil; and that he, and not M. 
Hoffmann, was unfairly treated. Dr. Mantell appears to be of a different 
opinion. 
Professor Ehrenberg, of microscopic celebrity, computes that the Tripoli of 
Bilin, in Bohemia, consists almost exclusively of the silicious remains of In¬ 
fusoria, of a species so minute, that a cubic inch of stone, weighing 220 grs., 
contains upwards of 41,000,000 of these skeletons! (p. 300.) The Purbeck 
Limestone of the Wealden abounds in organic remains ; and the marble is a con¬ 
glomerate of small fresh-water Snail-shells ( Paludina ), &c. “ How interesting,” 
exclaims our author (p. 331), “ is the reflection, that the beautiful cluster columns, 
the richest ornaments of Chichester Cathedral, are entirely composed of the shelly 
coverings of Snails, which lived in the river of a country inhabited by colossal 
reptiles!” 
The teeth of the Crocodile, as represented at p. 352, consist of several im¬ 
bricated cones; and when the outer tooth wears away, a new one supplies its 
place. The patriarchs of the race are, therefore, just as well off in this respect 
as the youngsters. Unfortunately for the majority of our own species, but hap¬ 
pily for the individuals ycleped dentists, no such provision exists in Man ! 
The discovery of some bones of the Iguanodon, by our correspondent, Mr. W. 
H. Bensted, is subsequently detailed. They were found in a stone-quarry be¬ 
longing to that gentleman, near Maidstone, and were mistaken by the workmen 
for petrified wood. 
Dr. Mantell’s sketch of the Wealden, that interesting fresh-water deposit 
lying on marine formations, is masterly; but we have no room for enlarging upon 
the subject to any advantage. 
We have now cursorily glanced at a few of the wonders contained in the four 
first lectures, as published in Vol. I., and shall conclude with a few general ob¬ 
servations on the plan of the work. The volumes are liberally illustrated with 
“neat wood-cuts.” The method adopted of furnishing what are technically 
termed “ side-headings” to the paragraphs where a new branch of the subject 
commences, and of numbering these paragraphs, is excellent ; and we must 
especially applaud the plan of supplying a glossary of scientific terms at the end 
of the volume. In short, nothing can be more complete than the editorial “get¬ 
ting-up” of the work, the credit of which, we presume, is due to Mr. Richardson. 
Dr. Mantell has very appropriately termed his work the Wonders of Geology. 
