UNIO ITINERARIA. 323 
INFORMATION RESPECTING THE UNIO 
ITINERARIA.* 
TO THE MEMBERS OF THE TRAVELLING NA- 
TURAL HISTORY SOCIETY, AND TO ALL FRIENDS OF 
THE NATURAL SCIENCES, BOTANY iN PARTICULAR. 
(Collection of Caucasian Plants :— Expedition into Arabia 
Sor the purposes of Zoology and Botany.) 
Tue Travelling Society has received and distributed, during 
the past year, the first set of the dried plants which were 
collected in the environs of Schuscha, in Caucasian Georgia, 
on the frontiers of Persia, by M. Hohenacher of Wurtemberg. 
The same Botanist has just transmitted a much larger col- 
lection of complete and well-prepared specimens. These are 
already distributed into a hundred separate sets, furnished 
with printed labels, and ready to be delivered, so that we are 
in a situation to satisfy the demands of those friends who may 
forward to us the value free of expense. 
- The collections are of two kinds, viz. ; 
l. For the associates or such other individuals as have 
already received the first set: 138 species, different from 
those which have been already delivered, for 15 florins (32 
francs, 25 cent.) 
2. For those persons who have not received the first set, 
175 species, of which a great number form a portion of the 
first set, the price is fixed at 20 florins (43 francs.) Those 
Subscribers who have already a claim on the Society’s funds, 
may deduct it from the amount of this packet. All the 
* From the German Circular of Drs. Hochstetter and Steudel. 
