466 ' Letter from B. A. Gould. 
and seem to bring the Devonian and Mesozoic flora into greater 
apparent harmony. 
Besides the forms already mentioned the bed affords two 
new species of Aséerophyllites, a new and beautiful Hymenophyl- 
lites, a new and pretty Hremopteris, two species of Lepidoden- 
dron—one allied to L. tetragonum Steenb., found by Dr. Dawson 
in the lower Carboniferous of Canada—two species of Cordaites, 
one probably C Robbii Dawson, a Devonian form from New 
runswick, a new and large Cardiocarpon, a large fine cone of 
somewhat doubtful affinities, a curious jointed root and several 
g 
the Ohio Geological Reports.* 
Art. LVIII.— Letter to the Editors, from Dr. B. A. Goutp, Direc- 
tor of the Cérdoba Observatory, dated Cérdoba, Sept. 8, 1875. 
Messrs. Dana & Srrtiman:—When I took leave of you last 
November I did not intend that so long an interval should elapse 
without the fulfillment of my promise to send you tidings of the 
progress of my work. But what with the accumulation of mate- 
rial during my absence, and the relentless pressure of the current 
observations, I have been unable to do more than keep pace with 
been observed 1872, Sept. 9, and the last 1875, Aug. 9, but as 
there was an interruption of about a year during this interval, not 
records is now completed ; and the copy of the observations upon 
ably be completed before this letter can reach you. The secon 
copy upon computation-blanks, is likewise well under way. 
us the entire region from 23° to 80° of South declination has 
been well scrutinized. The ten degrees around the pole have been 
is thoroughly examined by Gillis in Santiago and Stone at the 
a od i 
and my northern limit overlaps Argelander’s southern zones by 
i FY Maan os 1 uest of that 
deeply lamented astronomer. | ee ae 
The width of the zones has varied with their declination, am) 
with the abundance of their stars; the maximum width being - 
at the northern limit, and 4° for the zones immediately north oF 
___ * Professor Andrews has sent ies of his and we can testify to 
ait. 
