PREFACE. 



THE first edition of " Cactus Culture " was published in 1889. 

 A second was called for in 1903, a third some years later, and now a 

 fourth edition has become necessary. The work has been carefully 

 revised, a number of species have been omitted owing to their not being 

 in cultivation in this country, and others of recent introduction have 

 been added. Botanical works reveal that many new additions to the 

 Order Cactacea have been made, some of which, no doubt, are now in 

 cultivation in American gardens, where Cacti are more in favour than 

 they were. Considerable alterations in the classification of nomencla- 

 ture of the plants have been made by American botanists, but it has 

 not been thought advisable to follow them here, the names used in this 

 book being the same as are in use at Kew. 



