100 THE EEV. F. A. WALKER, D.D., F.L.S., ON 



quency in the desert has ah-eady been referred to, and it is 

 likewise far from uncommon in South Europe, where I have 

 noticed it fringing the ascent to the old quarter of the 

 gipsies in the outskirts of Granada, and have likewise 

 gathered it on the approach to Baia3 in the Bay of Xaples. 

 The species of acacia or mimosa, to which genus the sunt 

 tree belongs, are numerous in the Nile valley, and form no 

 inconsiderable part of its characteristic vegetation, though 

 difiering greatly in size and form of foliage and flower in 

 the respective dimensions of the trees, and indeed in most 

 superficial points of likeness. I append a list of those that I 

 have personally observed. 



Acacia Farnesiana, Isle of Roda, Fitneh. 



,, Lehbek, Geeseh and Port Said, etc, Lebbekh. 

 Parkinsonia aculeata, Road to Heliopolis. 

 Sesbaiiia jF^gyptiaca „ „ 



Acacia tortilis ,, „ 



Cassia ohovata, Minieh, Upper Egypt and Gerf Hossayn, 

 Nubia. 



