SPREADING OF ANIMALS. 



47 



cially with regard to the handsomer species, peculiar 

 to the Torrid Zone. They extend over the greater 

 part of the Temperate Zone. 



17. The Order of the Rhamni consists of shrubs 

 and trees, which extend from the warnixj" climates 

 over a large portion of the Temperate Zone ; parti- 

 cularly in the species of the Buckthorn (Rhamnus), 

 and some species of the Spindle-tree (Euonymus), 

 Bladder-Nut (Staphylea), and Holly (Ilex). 



18. The Order of the Euphorbia is particularly 

 common to warm countries in several trees and 

 shrubs ; from whence it extends, in the form of herbs, 

 over the greater part of the Temperate Zone. Be- 

 sides the Euphorbium, there are the Box-tree (Buxus), 

 and the Castor-oil Plant (Ricinus) . 



OF THE SPREADING OF ANIMALS. 



Every Plant adheres to the ground, where it grows 

 either immediately, or, as a parasitical one, mediately: 

 and every class of plants is peculiar to a certain 

 soil, as well as to a certain climate. The Animals, 

 on the contrary, are not bound to the globe ; they 

 arbitrarily change the country they inhabit the more 

 they approach man with regard to gradual perfection. 

 Man, only, extends himself over the whole of the 



