Biographical Sketch of the late John Evans, M.D. 313 
Dr. Leidy, he informs us, has furnished no less than ninety 
figures of mammalian fossils, and the other scientific gentlemen 
have worked out the problems given them to solve, so that a 
magnificent foundation is laid for a most interesting and valuable 
report, embracing the labors of some of the most able naturalists 
and chemists in this country. 
Dr. Evans worked steadily on his report, presented it to Con- 
7 and having had an opportunity to re-visit Oregon and 
ashington Territories, by consent of Congress withdrew his 
report for the purpose of adding to it his last researches, and 
thus making it more perfect. We understand that this labor 
was performed, and that the revised and tompleted report is now 
in the general land office at Washington, awaiting publication, 
which it is earnestly hoped may not long be delayed. 
One of the most interesting scientific discoveries made by Dr. 
Evans, during his explorations in Oregon, was that of an enor- 
mous mass of meteoric iron containing an abundance of chryso- 
lite or olivine imbedded in it. During the Indian war in that 
those 
- Very interesting meteorite, and I shall therefore transcribe what 
e says of it. In reply to my inquiry, whether he felt confident 
he could again find this mass of meteoric iron, he says in his 
