STATISTICS 



I. THE NUMBER OF ARTICLES. 



Total number of entries or articles, including 

 cr is s -references: 



Volume 1 1270 



Volume II 1263 



Volume III 659 



Volume IV 1165 



4357 



II. THE NUMBER OF PLANTS. 

 The number of genera described: 



Volume 1 820 



Volume II 623 



Volume III 351 



Volume IV 461 



2255 



Total number of species fully described (in 

 black-faced type) : 



Volume 1 2924 



Volume II 2675 



Volume III 1405 



Volume IV 1789 



8793 



Total number of varieties (of species) of all 

 grades: 



Volume 1 1187 



Volume II 982 



Volume III 628 



Volume IV 838 



3635 



Total number of synonyms (in Italic type): 



Volume I , 2446 



Volume II 2104 



Volume III 1243 



Volume IV 1689 



7482 



Total number of species in supplementary lists 

 (in Italic type) : 



Volume 1 9351 



Volume II 864 



Volume III 576 



Volume IV 733 



4524 



Total number of Latin binomial and trinomial 

 plant names accounted for (approximate) 24434 



III. THE NUMBER OF SPECIES (IN BLACK -FACED 

 TYPE) NATIVE TO NORTH AMERICA NORTH 

 OF MEXICO : 



Volume 1 668 



Volume II (}3i 



Volume III 416 



Volume IV , 704 



2419 



IV THE DATES OF PUBLICATION: 



Volume I February 14, 1900 



Volume II July 18, 1900 



Volume III April 23, 1901 



Volume IV February 26, 1902 



(xv) 



