Reviews — Natural History Museum. 521 



papers of economic importance ; on an occurrence of copper ore in 

 the Darjiling district, and on coal deposits in Punjab and Assam. 

 Various mineralogical notes and technical assays are appended. 



22. Stylonurus in the Baltic Silurian. — The genus Stylonurus 

 has not hitherto been recorded from the Baltic region, but Dr. F. 

 Schmidt, in examining a specimen collected from the uppermost 

 Silurian of Kotzikiill on the Island of Oesel, has come to the con- 

 clusion that it represents a fragment of this Merostomatous Arthropod. 

 He bases this conclusion on the general form of the body, which 

 tapers somewhat rapidly backwards, the shape of the four-jointed 

 limb fragment with terminal spines, and the ornament of the body- 

 segments. At the same time the species, which he names Stylonurus (?) 

 Simonsoni, after the collector, may belong to some hitherto undescribed 

 genus. The specimen presents some interesting features, especially 

 two grooves on the dorsal side of the carapace, giving it a somewhat 

 trilobed appearance. Portions of the underside of the head-shield 

 are preserved, including a complete metastoma, a structure hitherto 

 unknown in Stylonurus ; it is distinguished by its pyriform outline. 

 Dr. Schmidt's paper, which appeared in the J^ulletin of the Imperial 

 Academy of Sciences of St. Petersburg for March, 1904, is illustrated 

 by a plate. 



23. A LARGE FsESTwiOHiA.— Among the papers of the late Pro- 

 fessor C. E. Beecher was found a manuscript which has been printed 

 in the Amer. Journ. Sci., July, 1904. This manuscript describes 

 (and figures) a cephalothorax of Prestwichia signata, sp.n,, from the 

 Fort Riley Limestone of the Lower Permian, three miles west of 

 Stockdale, Kansas. The specimen has a length of 45 mm., and is 

 of especial interest as coming from a higher horizon than any other 

 American species yet known. 



la IE "V I IB "W" S. 



The History of the Collections contained in the Natural* 

 History Departments of the British Museum. Vol. 1 : 

 The Libraries — The Department of Botany — The Department of 

 Geology — The Department of Minerals. 8vo ; pp. xviii and 442. 

 (London : printed by order of the Trustees of the British 

 Museum. Sold by Dulau & Co., 37, Soho Square, W., and 

 others. 1904. Price 15s.) 



THIS volume contains the history of the libraries and of the 

 collections in the Departments of Botany, Geology, and 

 Minerals. A second volume (not yet issued) will contain the 

 history of the collections in the Department of Zoology. 



" The possibility of producing such a history as the present is," 

 says the Director in his Preface, " a remarkable evidence of the 

 care and efficiency with which the records of the Museum have 

 been kept during the past century. The value of the book to 

 workers in the various branches of Natural History will be very 



