362 Bibliographical Notices. 



used to look at, not gather, on the mountains are hopelessly eradi- 

 cated ; and they have to go to spots more fitted for the Alpine Club 

 than the botanist, to see the rarer or more interesting species. Hap- 

 pily there are a few such spots to which no " tourist " is likely to 

 attain, where our rare Ferns may perhaps be preserved for the grati- 

 fication of a future generation, and from which, when the present 

 fashion has passed away, they may spread to more accessible places 

 on the hills. 



Chart of Fossil Crustacea. By J. W. Salter and H.Woodward. 

 With Descriptive Catalogue. Lowry & Tennant: London, 1865. 



This is a large chart (2 feet 2 inches by 2 feet 9 inches) of the 

 genera of fossil Crustacea, showing the range in time of the several 

 orders, together with some recent Crustacean types analogous to 

 the extinct forms. The Chart is divided transversely into fifteen 

 zones of varying thickness, alternately dark and light, and corre- 

 sponding to geological stages; and vertically, across these bands, are 

 represented eight streams, varying in width and length, of Crustacean 

 forms, — some (as the Trilobites and Eurypterids) beginning early 

 and dying out in palaeozoic times, others (as the Decapods, Tetra- 

 decapods, and Xiphosures) beginning either in the Devonian or the 

 Carboniferous period .and still flourishing ; whilst the Brachyurous 

 Decapods are first found in the Jurassic rocks. Among the lower 

 groups of Crustacea, the little Bivalved Entomostraca seem to have 

 had representatives for almost as long as fossiliferous strata take us 

 back in time; for their "stream of history" ranges upwards from 

 the chart's lowest band ("Cambrian" or " Lingula- flags"). The 

 Cirripeds also are included in this conspectus of Crustacean life ; 

 and the Catalogue explains that though in the Chart they range 

 only from the Rhaetic strata upwards, yet good specimens of a trust- 

 worthy representative (Turrilepas) have of late been recognized by 

 Mr. H. Woodward among Upper Silurian fossils ; and woodcut 

 figures are given at page 26. 



The Chart fully answers the purpose proposed — supplying the 

 carcinologist with an eye-sketch of the Crustacean types and sub- 

 types, and enabling the palaeontologist to see the coexistent forms at 

 any epoch, and to trace at a glance the range of each group, whether 

 occupying the stage at once in force, as in the case of the Trilobites 

 and Eurypterids, or beginning with obscure traces or uncertain forms, 

 and whether giving place to incoming allies or continuing in true 

 succession to the present day. We need not wonder that the Chart 

 is good, well-devised, and conscientiously worked out; for Mr. Salter 

 is devoted to Trilobites, Palaeocarids, et hoc yaws omne, whilst Mr. 

 H. Woodward is as fond as anybody of Crabs and Lobsters, Prawns, 

 Shrimps, and " such small deer," not only in the fresh but in the 

 fossil state ; both also have made a study of the Eurypterids, and 

 both have command of the goodwill and help of their brother 

 palaeontologists ; while Mr. Lowry, the engraver, has long been 

 known for the successful application of his art to geology and fossils, 

 prompted by a genuine love of the science in all its branches. 



