INTRODUCTION 



(Second edition, Hamburg, January, 1819) 



To friends of knowledge, the name of Dr. Bolten will remain 

 a lasting memorial. With the mention of this name there will 

 come to his friends the memory of pleasures which an ever ready 

 display of his splendid art and nature treasures gave them, which 

 the owner through his wide knowledge and acquaintance and 

 devotion had the good fortune to bring together, through 40 years 

 of collecting. To those who did not personally know the venerable 

 deceased, it will be pleasant to see this splendid collection, and 

 to come into possession of these valuable and rare objects which 

 are now offered to them for sale. 



I am only able to repeat the well known and deserved praise 

 which has been bestowed upon this collection, which undoubtedly 

 ■ — in so far as the conchological portion is concerned — has to be 

 counted among the first collections as far as the beauty and rarity 

 of the specimens contained in it are concerned. What the amateur 

 may find, the following catalogue tells, which was prepared as 

 long ago as 1798, and by Mr. P. F. Roeding, with the greatest of 

 care, after Gmelin's 13th edition of the Linnaean System, was 

 provided with as many careful additions of references as possi- 

 ble, from the best authorities. Since the collection contains many 

 rare, little known or even undescribed forms, I have in the present 

 edition of the catalogue, which is comparatively free from printers' 

 errors, made a new comparison with the collection, and have added 

 a few lithographed drawings which I recommend to the kind 

 consideration of amateurs. 



The late Mag. and Abbe A. A. H. Lichtenstein had the kind- 

 ness to add to the first catalogue a Latin introduction, to omit 

 which would be a fault since it honors the memory of two worthy 

 men. 



An asterisk placed before the numbers in the catalogue will 

 permit the reader to find more readily the very fine or remarkable 

 specimens. The value of the precious examples of the collection 

 is enhanced by their excellent preservation. The foreigner order- 



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