320 Reviews — Devonico- Carhoniferus. 



under the supervision of the late Dr. Lindley and Mr. W. Hutton 

 between the years 1835 and 1840, but not published, the Council 

 of the Institute resolved to publish the more important figures, of 

 undescribed. rare, or beautiful specimens, most likely to prove of 

 value to the student of fossil botany, and hence the origin of the 

 above work, the editing of which was entrusted to Mr. G. A. 

 Lebour, who has appended to each plate a few brief remarks as to 

 the general character of the specimen figured, without a distinct 

 diagnosis, but with slight references to allied forms, and the localities 

 from whence they were obtained. The editor has, however, made 

 use of the notes referring to the plates left by the authors of the 

 "Fossil Flora," or their correspondents. The specimens figured 

 were mostly obtained from the Coal-measures of the North of 

 England, and consist chiefly of species of Neuropteris, Pecopteris, 

 SpJienopteris, with forms of Sigillaria, Lepidodendron, Calamites 

 and their foliage, and also some excellent examples of those am- 

 biguous remains of plants referred to roots and rootlets. It may be 

 useful for those who may hereafter wish to compare the specimens 

 referred to in this work, to know that the original carefully executed 

 drawings are in the Library of the Institute, while the fossils 

 themselves have been deposited by the Council in the Museum of 

 the Natural History Society of Newcastle. J. M. 



Y. — Thesaurus Devonico- Cakboniferus : The Flora and Fauna 

 OF THE Devonian and Carboniferous Periods. The Genera 

 AND Species Arranged in Tabular Form, showing their 

 Horizons, Eecurrences, Localities, and other Facts. By 

 J. J. BiGSBT, M.D., F.E.S., F.G.S., etc. 



ANOTHER work has appeared from the pen of one of the oldest 

 and perhaps one of the most painstaking and laborious of living 

 geologists. In 1868 Dr. Bigsby published his Thesaurus Siluricus, 

 and he now issues his new volume of the " Thesaurus Devonico- 

 Carboniferus," consisting of 450 pages of closely-printed matter, 

 arranged in tabular form, the result of eight years' continuous and 

 almost uninterrupted labour. To attempt to estimate by the size of 

 the volume the work accomplished by the author, large as it is, is 

 totally to under-estimate the immense labour bestowed and the 

 minute and careful research required to produce so great a com- 

 pendium of palaeontological facts as that attempted and so success- 

 fully carried out by Dr. Bigsby. Such works are " lasting monu- 

 ments of the learning, labour, zeal, and research " of their authors. 



The author of the Thesaurus has chronicled with faithfulness the 

 palseontological results of all that has been done in Devonian and 

 Carboniferous geology in Europe, Asia, and America, tabulating under 

 their respective families every known genus and species, with their 

 chief localities, and one, and sometimes two, references, commencing 

 with the Plants in each of the two geological periods, and then 

 ascendino- through the whole Zoological series, from the Protozoa to 

 the Pisces and Amphibia. The great value of this Thesaurus to the 

 student consists in the (almost in every instance) correct reference 



