Letier from B. A. Gould. 469 
the Minister of Public Instruction has placed a smali sum o 
money at my disposal from the contingent fund of his department. 
When I next write I think it will be possible to give you some 
encouraging accounts, and description of results in detail. As yet 
I have had no time to undertake any measurements of the plates, 
but if my plans do not prove amiss, this will soon be possible. 
I possess an exquisite micrometer for the purpose, the gift as well 
as the construction of our friend, Mr. Rutherfurd. I have been 
endeavoring to procure photographic impressions of Hurydice, and 
its comparison stars, for Dr. Galle’s new investigations, but the 
stars are too faint. 
The geographical determinations of various points of South 
America are going forward as opportunity permits. Since my 
return I have obtained satisfactory exchanges of signals with San- 
tiago de Chile on two nights, and am waiting an additional 
exchange before deducing the final results. 
i o gradu 
Scale on the registers of both stations, while the observers telegraph 
the beats of a mean-time chronometer, for which the determine 
of the city of Parané was thus determined three days ago; to-da 
We have accomplished the same for La Paz, which is about 100 
miles farther up the river. The telegraphic communication only 
extends as far as Corrientes in 274°, but with the aid of their chro- 
hometer I trust they will be able to extend the longitude determi- 
nations as far as Ascencion, the capital of Paraguay, latitude 25 
16’. Thave also made arrangements for an early determination 
of the positions of Tucuman, situated 260 miles north of Cérdoba, 
and of San Juan at the base of the Andes, some 200 miles to the 
westwa 
In Dr. 
published, the results of my previous observations are se : 
; ef o 
the National Engineers, in connection with whom my determina- 
mercial or geographical importance, to which the te 
extends, 
nations all the capitals of provinces, and the chief points of com- 
: P P ’ J ph 
