478 Letier from B. A. Gould. 
tified for the Uranometry, and of others regarding which there is 
discordance in the existing catalogues. ‘The observations for lati- 
tude are completed and will give a value which can probably not 
be essentially nethide g without an investigation of the division 
errors of the circle. I have not yet completed their discussion, 
but the clbant latitude will not differ much from 
—31° 25’ 15'4, 
In connection with Sefior Moneta, Chief of the Corps of National 
Engineers, 1 have already carried out two series of longitude- 
determinations; the one with the city of Rosario, the other wit 
uenos Aires. With each of these places ebiie-dhedabé have been ex- 
changed on several nights, and with results that indicate that 
Cordoba is in fact more than a minute of time to the westward of 
the longitude of Santiago de Chile from European meridians is 
doubtless better determined than that of any other point in South 
America, the proposed undertaking should not only give us a very 
oo ater result for this observatory, but likewise improve the 
adopted values for Buenos Aires, Rosario and Montevideo. The 
value which I am for the present adopting is 
Cordoba “¢ 51™ 33° E. from Washington, 
16 39 W. from Greenwich. 
All obstacles to me commencement of the zone-work have, I 
inted upon a pe in another room, and rovided with 4 
herwis h 
dial, or a fitting ag ak bat this Nga have entailed a delay 
of at least four or five months; so, ignoring the want of local 
Srgectariticn we have as ‘struggling since May in an a ges 3 
to construct one of the « “home-made” sort, which should be 
ciently nice in its mechanical execution never to miss second, 
and yet interfere as little as possible with the clock rate. This is 
at last pia sagen thanks to the persistent efforts of Dr. Sollee 
and the dial is now perfo 
