IV PREFACE 



owner, and who probably was the same person mentioned in the 

 Linnsean Correspondence as purchasing American plants from 

 Marshall. Barclay's annotations, of which a specimen has been 

 allowed to remain on page 7 of this Reprint, were made before the 

 Catalogue was rebound and they have been shaved in the making 

 up. The latest known owner of the book was John G. Howe Drum- 

 mond, whose armorial bookplate adorns the front cover. 



As already hinted, my surprise was great at finding no mention 

 of Young's pioneer masterpiece in standard books of Botanical 

 reference. More careful research and correspondence on the subject 

 with several of the best libraries and authorities failed to discover 

 any bibliographic allusion to such a work either under the French 

 and German spelling of "Yong" or the English of Young. A can- 

 vass of the more important American Libraries has failed to discover 

 a single copy of this book, and for this reason alone the editor feels 

 justified in reproducing it. 



As this copy appeared to lack a page or two at end, I wrote to the 

 librarian of the National Museum of Natural History in Paris asking 

 if they had a perfect copy and was much gratified to get the following 

 courteous reply from the Librarian in Chief, together with a tran- 

 script of the missing last page, 55. 



Muse'um d' Histoire Naturelle Bibliotheque, 



Paris, 3 Septembre, 1915. 

 S. N. Rhoads, a Philadelphia 



Cher Monsieur: Voici les renseignements que je puis vous donner 

 au sujet du "Catalogue d' arbustis," etc. de Yong, dout vous vue 

 parlez dans votre lettre du 20 aout. 



"Je ne sais pas si le "Catalogue" en question est rare dans les 

 Bibliotheques europeennes, mais en tout cas i'l existe dans notre 

 bibliotheque, et complet. 



Je vous recopie la p. 55 (et derniere) . . . 



Je n' ai pas trouve, jusqu a present, aucune indication sur la 

 personnalite" de M. Yong. 



Veuillez agreer, cher Monsieur, 1'assurance de ma consideration 

 tres distingue^. 



I. DENIKER, 

 Bibliothecaire en chef. 



Being unable to get any information, either from reference books 

 or from persons, here or abroad, as to the identity and personality 



