Preface. v 



" Discorso," with the engraved portrait of Soldani ; among those 

 of scientific importance are the earlier issue of FICHTEL and MOLL 

 (which carries back their specific names five years) ; D'ORBIGNY'S 

 list of the Foraminifera of the Vienna Basin, published by J. VON 

 HAUER seven years before the full descriptions appeared; the 

 note on D'ORBIGNY'S "Planches inedites;" BOUE'S paper on the 

 Nummulites ; and SILVESTRI'S rare and interesting paper on 

 Soldani's " Testaceographia." 



For the first time, too, an endeavour has been made to 

 enumerate the important memoirs published by the Hungarian 

 authors with some approach to completeness, and the author is 

 indebted to his friend Dr. Gustav Dirner, of Budapest, for copies 

 of many of the originals. 



Much and valuable assistance has been received in the 

 communication of information and in the reading of proofs ; 

 especial thanks being due to Prof. T. Rupert Jones, who also 

 placed at my disposal his books and the whole of his notes and 

 memoranda made whilst occupied in conjunction with Professor 

 W. Kitchen Parker on their critical papers in the Annals and 

 Magazine of Natural History. To Mr. H. B. Brady I am indebted 

 for the free use of his library, and for constant kindness and help 

 during the progress of the work ; while Mr, Fortescue W. Millett 

 has kindly put into my hands his own manuscript lists, supplying 

 information with regard to many obscure publications. 



Help is also gratefully acknowledged from many friends on the 

 continent. Dr. Carlo Fornasini has favoured me with the sight 

 of some of the rarest of the Italian papers ; Professor Silvestri has 

 made me the fortunate possessor of his rare pamphlet on Soldani; 

 while to Professor E. Renevier, Professor Dr. E. W. Benecke, 

 Professor A. Gaudry, Dr. Fr. von Hauer, Dr. E. Geinitz, and 

 others, I owe much courteous assistance. 



Thanks are also due to the Librarians of the British Museum, 

 the Royal Society, the Geological Society, and others; and I 

 especially wish to express my indebtedness to Mr. Bernard B. 

 Woodward of the British Museum (Natural History), from whom 



