MR. J. BALL’S SPICILEGIUM FLORE MAROCCANS. 285 
tained in the herbarium of Mr. Bentham (presented by him to 
the national collection at Kew), and in that of my late lamented 
friend M. Jacques Gay (purchased by Dr. Hooker, and also 
given to the Kew Herbarium); so that I have had the opportu- 
nity of examining original specimens of nearly all Salzmann’s 
plants. 
In 1827 my excellent friend the late Philip Barker Webb spent 
three weeks at Tangier, and then visited Tetuan, where he was 
able to ascend two of the neighbouring mountains, and to discoyer 
amongst other novelties a new genus of Cruciferz, for which, up 
to the present time, no other locality is known. His collections, 
preserved along with the remainder of his great herbarium at Flo- 
rence, have been examined by M. Cosson and by myself. 
During the years between 1840 and 1870 many botanists touched 
at Tangier, including my friend M. Boissier, with the late M. 
Reuter, Dr. Lagrange, M. Blanche, M. Marés, and M. Jourdan. 
Several of the plants collected by MM. Boissier and Reuter were 
described by them in a little volume styled ‘ Pugillus Plantarum 
Novarum Afric borealis Hispanieque australis.’ In that work 
the criteria for the admission of new species, so justly maintained 
in the great works on which M. Boissier’s fame depends, were 
somewhat unduly relaxed. 
In 1859 the late Rev. R. T. Lowe contributed to the ‘ Proceed- 
ings’ of this Society a list of plants observed by him in the im- 
mediate neighbourhood of Mogador; and most of these are pre- 
served in the herbarium bequeathed by him to the Royal Gardens 
at Kew. 
In June 1851 I made an attempt to reach the higher summits 
of the Lesser Atlas in the neighbourhood of Tetuan; but, owing 
to the disturbed condition of the district, I was limited to the 
immediate neighbourhood of the city, which, however, offers many 
species of interest not found about Tangier. 
In 1869 my indefatigable friend, Mr. George Maw, was some- 
what more successful than myself, and was permitted to ascend 
part of the Beni Hosmar, previously visited by Webb. 
In 1867, chiefly through the influence and with the aid of M. 
Cosson, whose intimate acquaintance with the flora of Northern 
Africa is unrivalled by any competitor, the successful botanical 
traveller Mr. Balansa was despatched to Mogador, with the object 
of attempting to investigate the flora of the Great Atlas range as 
far as circumstances would permit. Although receiving every 
