274 Reviews — Professor Jukes' School Manual. 



formity and overlap of strata ; (10) the nature and occurrence of 

 fossils ; are briefly but distinctly noted, sometimes in detail. 

 III. The history of the formation of the rock- groups found in 

 the British Isles; (1) treating of geological history, time and 

 nomenclature ; (2) the Archaean or Eozoic period ; (3) the Cam- 

 brian and Ordovician periods; (3-12) the Silurian, Devonian, 

 Carboniferous, Permian or Dyassic, Triassic, Jurassic, Cretaceous, 

 Older and Newer Tertiary, and Pleistocene systems and periods, 

 are then taken in succession, with some of their most important 

 fossils, in such a manner as to indicate the chief points to be 

 remembered by the amateur, and to be further worked out by the 

 real student. 



Like the Author of this book, the Editor has had good technical 

 experience, being engaged on the Geological Survey of Great Britain ; 

 he is also evidently a reading man, and conversant with old and 

 new books; indeed we are glad to find him using the new (second) 

 Edition of the Eev. 0. Fisher's "Physics of the Earth's Crust," 

 only a few months old. The aid which Mr. Jukes-Browne has 

 received from Professor Bonney with regard to Petrology, especially 

 Igneous and Metamorphic rocks, and from Mr. Whitaker about the 

 Cretaceous and Tertiary formations, is gratefully acknowledged, and 

 goes far to assure the student of the exact treatment these subjects 

 have here received. 



The names of good observers and writers are not unfrequently 

 referred to in some parts of this "School Manual"; but few only 

 are mentioned in connection with the palasontological chapters. If 

 even the authorities for the species of those fossils which are figured 

 had been given, the student would have had some clue to the 

 palseozoology and palseophytology of the past, should he wish to 

 carry out any investigations in Geology. 



The illustrations throughout are mostly selected from those used 

 in Professor Jukes's excellent " Students' Manual of Geology," 

 which were nearly all original, and drawn for that book ; and they 

 still remain good and trustworthy. One very useful diagram (of 

 " overthrust- faults") has been added at p. 161. Among the fossils, 

 on the contrary, we should prefer to have seen the figures of 

 "Pleistocene fossils" (given in a former edition of the "School 

 Manual"), instead of the hideous and false portraiture of the 

 Mammoth at page 396. The several parts of the borrowed fig. 102 

 require an explanation which they do not get; so also a part of 

 fig. 80. 



The plan of giving the derivation of the names of fossils, and 

 indications of the prosodial "quantity" of their syllables, is very 

 good, and much required now-a-days, when students of natural 

 history are too often destitute of classical learning. The omission 

 of some of these indications, as in Pterinea, Hippopodium, and 

 Goniopholis ; or misplacements, as in Cardium ; or mistakes, as in 

 Cuvieri and Voliita, show the necessity of close reading for the press. 

 Some of the explanations too would be the better for revision : thus, 

 though of little consequence, Olenus was the son of Neptune and 



