rOETRAlTS OP CACTACBOCS PLANTS. S3 



There are several good works of reference on the Cactese, hut there is 

 not one devoted to these plants in the English language. Dr. Engelmann's 

 descriptions are extremely valuable. The maiority are in Latin, but some 

 useful additional particulars or duplicate descriptions are given in English. 

 The plates, too, are most beautifully executed. A very full and uselul 

 -work is thn " Monosraphie de la Famille des Caoties " by J. Labouret, 

 which, in 682 closely printed pages, gives an elaborate account of the 

 lamily — descriptive, Etruotural, and cultural. Deoandolle's and PfeifEei's 

 works contain much information tliat cannot be obtained elsewhere ; and 

 several other Continental boianists have also contributed works of more or 

 less importance to those iuterebted in Cactaceous plantsi 



