422 Reviews — Clark's Life of Sedgwick. 



In the section on the Dinosaurs the figure of the tibia, and astra- 

 galus of Megalosavrus, which we reproduce in Fig. 6, shows very 

 clearly the close resemblance presented by the mutual relationship 

 of these bones to those of the young Ostrich. Why, however, the 

 author should have gone out of his way to suggest that in both these 

 instances the astragalus is but an epiphysis of the tibia we are 

 somewhat at a loss to understand. In the same group the figures 

 of the bones of Dimodosaurns — a Dinosaur hitherto unknown to us 

 — are of interest as showing the apparently close relationship of 

 that form to Thecodorttosaurns and Anchisaurus. Judging, however, 

 from Prof. Marsh's figures of the hind foot of the la,tter, there is 

 some error in the restoration of the foot of Dimodosaurus given on 

 p. 219 of the work before us. 



Space does not permit of a detailed notice of the remaining portion 

 of the text devoted to the other Reptiles, nor of the chapters on 

 Archceopteryx and the Mesozoic Mammals. We cannot, however, pass 

 without notice the comparison on pp. 244, 245, between Pterodac- 

 tyles and Bats; and the suggestion, however guarded, of any affinity 

 between the two. Here the author does not seem to know his own 

 mind ; either Pterodactyles or Bats are or are not connected ; if they 

 are, well and good ; but if they are not, we fail to see how the 

 former can in any sort of way lessen the interval dividing Mammals 

 from Reptiles. 



We offer our congratulations to the Professor on having at length 

 reached the end of the long: task he has set before himself. E. L. 



II. — The Life and Letters op the Reverend Adam Sedgwick, 

 LL.D., D.C.L., F.R.S., etc. By J. W. Clark, M.A., F.S.A., and 

 T. McKenny Hughes, M.A., F.R.S., etc. Two vols. 8vo. 

 pp. 539, 640 ; with Portraits, Maps, and other Illustrations. 



. (Cambridge, at the University Press, 1890.) 



IT is well that the Biography of Adam Sedgwick has been 

 published, for no one can read the record of his life without 

 feeling the better for it. Seventeen years have passed since the 

 " First of Men " (as Sedgwick was known among his scientific 

 associates) passed away from earthly scenes ; and there is indeed 

 some reason to regret that the work was not sooner published. 

 Intimate friends of Sedgwick have lamented the delaj 7 , and geologists 

 who are more or less interested in the Cambro-Silurian controversy, 

 have wished for a fuller account of the circumstances which for a 

 number of years obscured much of the great work done by Sedg- 

 wick. His claims, however, to a foremost place among the founders 

 of our science have not been questioned ; his particular work now-a- 

 days receives adequate acknowledgment; and as the years roll by 

 there is a growing disposition to deal amicably with the vexed 

 subject of Palaeozoic nomenclature. 



So far as the Biography of Sedgwick is concerned, we question if 

 the delay has been at all prejudicial. Prof. Hughes, who originally 

 took in hand the task, found himself unable to devote the necessary 



