284 MR. J. BALL’S SPICILEGIUM FLORH® MAROCCANS. 
Durand, visited Marocco, reached Fez and Mequinez, and, so far 
as I know, alone of European travellers traversed some part of 
the great forest of Mamora, respecting which many a strange 
story circulates among the natives of Marocco. 
In 1809 was published the first edition of the work which gives 
by far the fullest account of Marocco that has yet appeared, 
‘An Account of the Empire of Marocco,’ by James Grey Jackson. 
Mr. Jackson lived for the greater part of sixteen years in South 
Marocco; he became familiar with the language and manners of 
the people, and must have acquired more of their confidence than 
any previous European visitor, as he not only travelled by several 
routes through the lower country near the coast, but was allowed 
to join a military force proceeding over the Atlas from Marocco 
to Tarudant. 
Mr. Jackson does not, however, seem to have ventured on 
entering the city of Tarudant; nor, though he approached Wad- 
noon, did he actually visit that place. 
Though not a naturalist, Jackson was a very intelligent obser- 
ver ; and on some points, especially regarding the curious cactoid 
Euphorbias of South Marocco, he has given information interest- 
ing to botanists. 
The next contributor to the knowledge of the Marocco flora 
was M. Salzmann, an active collector who, after previous visits to 
other interesting spots in the Mediterranean, spent a consider- 
able time at Tangier in 1825, and seems to have explored very 
carefully the district within convenient reach of that city. Salz- 
mann does not appear to have had much scientific knowledge ; 
but he was a sharp-eyed collector, and often detected differences 
between plants found by him and allied species, with which they 
had been confounded by other botanists. Several of these were 
published by the late M. A. P. Decandolle, then at the zenith of 
his scientific fame and authority, who had shortly before com- 
menced the publication of that colossal work, the ‘ Prodromus 
Systematis Naturalis.’ Others remained unpublished, except for 
the manuscript name attached to them by Salzmann. As, how- 
ever, his collections were sold, and were sufficiently numerous to 
supply the demands of the chief botanists of his time, this has 
been, I think, justly regarded as equivalent to publication, and 
as constituting a title to priority over names subsequently given 
by other botanists. 
Very complete sets of Salzmann’s Tangier plants were con- 
