ACCOUNTS, &C., OF THE BRITISH MUSEUM. 3^ 



32 Trilobites from the Lower Silurian, Dolgelly, etc. 



1 Temnechinus globosus, Forbes, from Coralline Crag, Oxford. 



12 Remains of Bourgueticrinus, etc., from the Chalk, Merstham and Gravesond. 



20 Echinoderms from the Neocomlan of Tealby, Lincolnshire. 



4 Slabs of a new species of Ophiura from the Oxfordian of Weymouth. 



12 Specimens of Pygaster, Clypeus, etc., from the Inferior Oolite and Upper Lias^ 

 Leckhampton. 



A remarkably fine series of Crinolds from the liower Carboniferous Series, Burlington, 

 Iowa, U.S.A., containing examples of 31 genera, and 138 species, and comprising 290 

 specimens, many of them in a most beautiful and perfect state of preservation, and 

 illustrating points in the anatomy of the Crinoidea never before seen in this country. 



10 Crinoids from the Wenlock Limestone, Dudley. 



13 Polyzoa from the Suffolk Crag. 



1 Polyzoon from the Chalk, Gravesend. 



41 Polyzoa from the Zechstein (Permian) formation of Gera. 



1 Siplionia from the Chalk of Surrey. 



3 Sections of Sponges in Flint from the Chalk of the Isle of Wight. 



56 Types of Foraminifera, etc., from the Zechstein (Permian), of Gera. 



A fine slab of Eozoon Canadense from the Laurentian of Canada. 



Fossil Plants. 



6 Specimens of Fossil Wood from the Crag of Suffolk. 



7 Remains of Araucarites, Zamia, Odontopteris, etc., from the Lias o^ Lyme Regia. 

 48 Plant-remains from the Zechstein (Permian), of Gera. 



8 Coal Plants from Dudley Coalfields, etc. 



The total acquisitions during the past year are as follows : — 



Vertebrata -----.- 1,490 



Invertebrata - - - - - - -1,557 



Plants -..--_- ^ 56 



Total - - - 3,103 



Geo. R. Waterhouse. 



Department of Mineralogy. 



The additions to the Collection of Minerals during the past year have been valuable 

 rather than numerous. The number of specimens acquired being 8 14, and they have 

 been catalogued, labelled and placed In the collection. Much of the work of the Depart-^ 

 ment has been given to the minute examination and assortment of the rocks In the Col- 

 lection, and for the study of these, sections for the microscope have been made, latterly 

 by the hands of the staff Itself. A large collection of rocks from Sweden, and Collections 

 from Scotland, and from the volcanic regions of the Mediterranean, have also been 

 minutely examined, and selections made from them. 



The Meteorites have been re-arranged: alterations have been made in the cases con- 

 taining them for the exclusion of the dust, and new fittings, with an arrangement for 

 desiccating the air, have been introduced into them. To about 2,000 of the specimens In 

 the Reserve Collection, the localities have been attached wherever research has enabled 

 this to be done ; a work needing careful elaboration. About one-half of that portion of 

 the collection is now completed. 



The embodiment in one single catalogue, arranged under the heads of the Mineral 

 species, of all the specimens distributed through the volumes of the General Catalogue, has 

 occupied all the time that could be spared on it during the past three years, and only 

 a portion of one volume and an index remain now to be completed. With the year 1875, 

 by the aid of this catalogue, a new and complete catalogue of the whole collection, with 

 descriptions of the crystalline forms, and with analyses of Important specimens, will be 

 commenced. 



The decomposed brecclated rock in which the diamonds are met with in South Africa, 

 has been Investigated, and various minerals that occur in it have been separated and deter- 

 mined, and have been analysed. A method for the analysis of Phosphate of Iron and 

 Alumina in cases where only small quantities could be provided for analysis, was much 

 needed : a satisfactory means of performing such analysis has been worked out by Dr. 

 Flight in the laboratory, and the complete analysis of Andrewsite has been effected by 

 this new method. 



The more important acquisitions of the year are the foUowiog : — 



By Presentation : — 



From A. R. Endres, Esq., Native Gold, finely disseminated in quartz, Acosta mine, 

 Costa Rica. 



From Spencer G. Perceval, Esq., f.g.p , Molybdenite, with iron pyrites in the horn- 

 148. E bleudic 



