386 New Mexico and California. 
ee 
[ ‘he following is the estimated amount for later. 
69,816 marc 982 dollars. 
138,015 “ 
129,402 m ” 
4 142,785 se ged 177 976 
128,747 eT 062,100 <* 
1831 138,916 “2146 007 
: ; : . 117,484 ° a 
1833 . 3 : 116,802 “ 963,616 *“ 
BBA. ; . 109,419 « 902,707 ‘“ 
recent dates I was unable to get, though I understood from 
lve years 
considerably increased. e computator of the above tables 
that the annual average amount of the production of silver an ge 
the state of Chihuahua is 125,000 mares, or $1,031,251 ; but he sup- 
poses that but 100,000 marcs of that sum pass through the mint, and 
that 25,000 mares are every year smuggled out of the count 
a well managed mint (casa de moneda) in Chihuahua, coin- 
ing gold, silver, and copper. - Mr. J. Potts and brother are the present 
proprietors, in consequence of @ contract made with the government of 
Chihuahua. As-all the silver ore in the state contains more or less gold, 
= separate it before coining, in large platina vessels, with sulphurie 
cid. For coining. a mare o of silver without separating the gold, they 
receive two reals, (25 cents ;) for coining and: separating the gold, five 
reals ; but the marc of silver from which the gold + to be separated 
must contain at least sixteen grains of gold.—pp. 56, 5 
This valuable document ,contains also a Botanical Report of 
much interest, . in ‘the preparation of which Dr. Wislizenus was 
assisted by Dr. G. punrenene of St. bantis.. 
the onthe near its head, the R vaton pass at a height of 7500 
feet above the sea, to Vegas,. San Migu op d Santa Fe. From 
here the Expedition followed down the Rio del Norte to latitude 
33°, and thence turned westward, taking the head waters of the 
Rio Gila, following it to the Colorado which it meets in longitude 
114° 37’; thence still westward, crossing a sandy desert ninety 
miles in breadth, to the Cordilleras of California, and surmount- 
ing these heights to San Diego (lat. 32° 45’ N.) and other Bacse 
on the Pacific co 
The company clini to the first dragoons under the com- 
mand of Col. Kearney. They started from Fort Leavenworth 
on the 27th of June, 1846. 
Between ad Leavenworth and Pawnee Fork, the —_ 
prairies are rsed by many streams, the which lie 
deep with eae vertical banks, “ developing where the streams 
