348 GENERAL SUMMARY TO 



One of the most important advances made towards classification was the dividing 

 of the Brachiopoda into two great groups, namely, that in which the intestine is provided 

 with an anal aperture, and that in which it has none ; but it must also be borne in mind 



and comprising his figured types, were bequeathed by him to the Museum of the Ecole des Mines of Paris, 

 and could not have been better located. 



Alcide d'Orbigny's collection, comprising the species described in his ' Paleontologie Francaise,' 

 •was purchased at his death by the administration of the Jardin des Plantes. France is exceedingly rich 

 in species of Brachiopoda, but no general monograph of them has been hitherto published, especially of 

 its many Devonian forms. 



Most of our great British collections of fossils have found their way to the British Museum. William 

 Smith's collection, Sowerby's types of the Mineral Conchology, Gilbertson's Carboniferous species, and 

 many others, can be consulted there in the Geological Department, and I hope that some day my own 

 collection of Brachiopoda may also obtain there a resting place. Murchison's Silurian types are at the 

 Geological Society. Very many of those described in this Monograph form part of the admirably classed 

 collection at the Museum of Practical Geology in Jermyn Street. Sedgwick's and M'Coy's types are in 

 the Cambridge Museum. 



The German Brachiopoda as well as those of Austria have received the attention of several distin- 

 guished palaeontologists, and we must allude in particular to the many plates and figures published by 

 Quenstedt in his ' Petrefactenkunde Deutschlands.' Prof. E. Suess's types of Austrian species form part of 

 the Imperial Museum of Vienna. The species of Saxony have been carefully worked out by II. B. Geinitz. 



Industrious Switzerland is publishing descriptions and figures of all its Brachiopoda in the 

 ' Paleontologie Suisse.' The larger number have already been made known in that and other publications 

 by Pictet, de Loriol, Ooster, Favre, Renevier, and others. 



Belgian palaeontologists have already described and figured a large number of their fossil Brachiopoda ; 

 Prof. L. de Koninck's great and admirable work on the • Fossiles Carboniferes de la Belgique ' is well 

 known, but a monograph of the numerous Devonian forms remains still to be published. 



The Brachiopoda of Russia have been to a great extent described and figured by M. de Verneuil, 

 Count Keyserling, Pander, Rouiller, d'Eichwald, Fischer de Waldheim, Trautschold, Volborth, Kutorga, 

 Moller, myself, and others. The forms that occur in that vast empire are numerous and peculiar. 



The Swedish species have been described by Dalman, Hisinger, Nilsson, Angelin, Lindstrbm, 

 Linnarsson, and others. From the Upper- Silurian rocks of the small Island of Gothland alone nearly 

 150 species of Brachiopoda have been collected by Prof. Lindstrom. Dalman's and Angelin's types are 

 carefully preserved in the Museum of Stockholm. 



The Dutch species of Brachiopoda have been well studied and described by Bosquet and others. 

 Those of Spain and Portugal have been likewise to some extent carefully investigated. 



The Italian palaeontologists are doing much to make known the species of their country, which is 

 especially rich in Tertiary and Jurassic forms, so well described by Meneghini, Seguenza, Canavari, 

 Parona, and many others. 



The Brachiopoda that occur in Asia have to some extent been already carefully elaborated, especially 

 so by Tchihatchef, de Koninck, Waagen, Stoliczka, and others. The large collection of the Salt-Range 

 species is preserved in the Museum of Calcutta. 



Not very many species of Brachiopoda have been found in Africa. Australian, Tasmanian, and New 

 Zealand species have to some extent been already made known. 



Nowhere, however, have the Brachiopoda received more attention than in America. The fine mono- 

 graphs published by J. Hall, Meek, Worthen, and many others, show how rich that vast continent is in 

 species belonging to the Palaeozoic period. The large collection made by Prof. Hall is now in the possession of 

 the Museum at New York, where it is carefully attended to by Mr. Whitfield. Canada possesses many 



