154 Scientific Intelligence. 
works to which we have referred above. In a biographical notice 
prepared for the Proceedings of the American Academy of Arts 
and Sciences, and reprinted in this Journal, HI, vol. i, p. 115, we 
we desire t : 
araday and Graham were two of the most successful dis- 
coverers who in any age have illustrated the annals of. physical 
science, and their success was wholly due to the power with which 
they wielded the inductive method of experimental research. Ex 
e 
periment guided by analogy ever has been, and e ust be, the 
fundamental condition of all progress in physics, and Vv regret 
to undervalue this e of investigation as 
can marshal differential equati nd forth the truths which 
volve d this mathematical skill, all important as it 1, 
and essential to the later development the science, wou 
of what great results can be attained by purely and 
very simple experimental means, 
Newport, July 9th. 
Il. GroLoagy AND MINERALOGY. 
region to the Cretaceous, making the Eocene Tertiary commence 
with the Wahsatch group. These Judith River beds overlie the 
dith beds have a thickness of 300 to 500 feet, and afford, above 8 
well as below, various Dinosaurian remains, From the upper aue- 
thirds of a section of 332 feet, Dr. Cope enumerates the folanne : 
Lelaps, 6 species; Troddon, 1; Aublysodon,2; 12 others or the 
anus, 
nius, Trachodon, Monoclonius ; also species of Crocodilus ; of the 
Onyx, 
Testudinate genera astomenus, Polythorax, Comp 
