Bibliographical Notice. 475 



Fig. 3. Araneus Woodfordi, sp. a. Dorsal surface of cephalothorax 



and abdomen. 

 Fig. 3 a. Ditto. Vulva. 



Fig. 4. Pasilobus mammatus, sp. n. Dorsal view. 

 Fig. 5. Actinaccmtha metallica, sp. n. Dorsal view. 

 Fig. 6. Gasteracantha signifer, sp. n. Dorsal view. 

 Fig. 7. Dolomedes laticeps, sp. u. Eight palpal organ from below. 

 Fig. 8. Palgstes speciosus, sp. n. Vulva. 

 Fig. 8 a. Ditto. Right palpal organ from below. 

 Figs. 9, 9 a, Heteropoda {Parhedrus) mecistopus, sp. n. Right palpal 



organ from below. 

 Fig. 10. Bathippus macroprotopus, sp. n. Dorsal view. 

 Fig. 11. Fustirognuthus oscitans, gen. et sp. n. Anterior view of head 



and mandibles. 

 Fig. 11 «. Ditto. Side view of carapace. 

 Fig. 116. Ditto. Labium and maxilla. 



BIBLIOGEAPHICAL NOTICE. 



Fossil Plants : for Students of Botany and Geology. By A. C. 

 Seward, M.A., F.G.S., &c. Vol. I. With Frontispiece and 111 

 other Illustrations. Pages xviii and 452. 8vo. University 

 Press, Cambridge. 1898. 



This volume is one of the Biological series of the Cambridge Xatural 

 Science Manuals. The mutual bearings of Geology and Botany are 

 well considered by the author in his preface, and clearly elucidated 

 throughout his work. He intimates, with good reason, that both 

 of these branches of science are rarely sufficiently well understood 

 by one and the same naturalist ; for a botanist will probably with 

 ease get enough knowledge of geology, without working its deeper 

 and more complicated problems, to be assured of its value in 

 palceobotany ; whilst, on the other hand, a geologist, taking up the 

 subject intently, would require an intimate knowledge of the ad- 

 vanced and manifold researches of recent botany. In the third 

 place, students having a general knowledge of natural science can 

 find interest and instruction in such an earnest, clear, and compre- 

 hensive exposition of the principles and facts concerning petrified 

 plants as this manual now before us. 



The difficulty of clearing away the physical obscurities from 

 fossil plant-remains, due to their imbedment, mineralization, and im- 

 perfections, doubtlessly delayed botanists from attempting to co-relate 

 them with living forms to any great extent ; and when they knew 

 of the relative age and successional occurrence of these fossils, they 

 co\ild not feel sufficient interest to study their geological history in 

 detail. Fossil-collectors, applying a limited knowledge of recent 

 plants to the desired explanation of fossil leaves, fruits, and wood, 

 made very slow advance ; but they obtained some good results with 

 careful use of the hand-lens. "With the compound microscope, 

 however, and the acquired art of making more or less transparent 



