208 Remarks on Mr. Owen’s Letter 
Perihelion passage, .. . Feb. 274.579857 m. t. Green. 
. Longitude of perihelion, . 279° 40/35”.50 
sit pepe of ma node . .15°..0/ 56.45 . mh. oq. Meh. Sy 
_ Inclination, . . BARE 4.66 
_ Eccentricity, . « . . + 10008560 
4. Gaussian angley... 6.6 «6902923'. 04.7 6 
Perihelion distance,. . .  0.00415697 . 
_. Mean daily motion retrograde, 146’.50299. 
. We have the honor to be ve obedient epee 
: rs C. Warern) 
EB. Ohi KeEnpDact. 
To Messrs. John K Kane, eannies Dallas Bache, LL. D., 
' pera es = ™ — eee Fisher. ; 
bi 
Cath any 
n XI skineinabey s on Mr. Giowite oem to the Editors © on 
Dr. Frarlawe: New Fossil Mammalia. 
as THE EDITORS OF THE AMERICAN JOURNAL, OF peste) 
New Orleans, May 5, 1843, 
Sralohiaet the last number of your Journal, (Vol. xx1v, No. 
2, p. 341, April, 1843,) I was gratified with the poral of an in- 
teresting letter by Prof. Owen of the Royal College of Surgeons, 
London. ‘The observations and opinions of Dr. O. on fossil oste- 
ology, are entitled to. the highest respect; placed at the head of 
the richest osteological collection in the world, and endowed with 
a genius which peculiarly qualifies him for the successful prose- 
cution of his favorite department of science, he has perhaps ac- 
complished more for its advancement than any other single living 
laborer in this attractive field.of research. His criticisms on My 
“notice of new fossil mammalia,” are conceived in the proper 
spirit, having no other object than the enone of vie 
and as such are duly acknowledged: 
I write under a full conviction of the difficulties pee my 
present isolated position: there does not exist a scientific library 
within a thousand miles, and the natural and physical ssid 
have consequently few votaries. 
The observations of Dr. Owen and myself on certain fossil 
mammals, have resulted in some discrepancies of opinion, which 
I conceive require some explanation on my part. 
