BOTANICAL INFORMATION. 153 
Russland, extracted from the Memoirs of the Academy of 
Science, at St. Petersburg. 
While we were engaged in laying, so to speak, the foun- 
dation of a Western Asiatic Flora, it was indispensable to 
append to our J//ustrationes a Geographical Map of this region, 
marking the principal routes of travelling botanists, and this 
I compiled myself, with the most scrupulous care, laying 
down their tracks from all the documents that I could pos- 
sibly procure, and giving that of Michaux from the unpub- 
lished collection of the Autographs of Botanists, which forms 
a part of M. B. Delessert's valuable collection. These jour- 
neys have afforded me many precious particulars, elucidating 
not merely the localities named in herbaria, and the stations of 
individual plants, but su pplying many gaps in Geography itself. 
‘The great works of M. Texier, on Asia Minor, Armenia and 
Persia, with the beautiful map of Persia, upon which Co- 
lonel Lapie has long been engaged, will throw much light on 
these countries, and both these gentlemen have kindly con- 
sented, in the interval that still precedes the publication of 
their important labours, to assist in forming a special map, 
devoted to that region which now engages our attention. 
All M. Texier’s routes are laid down in it, so that it may 
Serve as a travelling map to his atlas. We have agreed also 
to indicate thereon, both because of their own merit and 
because of their connexion with M. Texier's travels, the two 
French, though not botanical, tracks of Corancez and of ny 
Tespected colleague, M. Léon de la Borde. x se 
Wherever it was practicable, we have marked on our 
. Map the authentic indications of elevation above the level of 
^e sea. Many of these statements are derived from the 
barometrical observations of M. Texier, corroborated by Col. 
3 lcros, whose extensive information on this subject has 
proved highly useful to us in this department of the work. 
€ feel confident that our map will be extremely serviceable 
~ botanists, whether in facilitating the classification of lo = 
calities in their collections, or in calling attention to unex- 
