MEMOIR OF O. C. MARSH 525 



A treaty was obtained with difficulty, and then assistance was' withheld. 

 Nevertheless, with great hardship owing to extreme cold, the party suc- 

 ceeded in reaching the desired region, and made important discoveries, 

 among which numerous remains of the gigantic Brontotheridse are the 

 most noteworthy. 



The rapid settlement and development of the West rendered it no 

 longer necessary to fit out expensive expeditions, especially as many of 

 the localities were easily accessible by railroad. Therefore, after 1876, 

 local collectors and small parties were employed in continuing the work 

 of collecting fossils so successfully begun b}^ the Yale scientific expedi- 

 tions. Nearly every season, however, Marsh visited the localities where 

 work was being carried on, and some time each year was spent in recon- 

 naissance for new fields of labor. 



Professor Marsh's life was remarkably free from the petty annoyances 

 of poor health which so often interfere with human comfort and ambi- 

 tions. In the midst of his scientific work and while making plans for 

 the growth of the museum, he was suddenly overtaken by the malady 

 which resulted in his death. He died of pneumonia, on March 18th, 

 1899, in his sixty-eighth year, after an illness of about a week. His work 

 as an investigator in natural science, his wonderful scientific collections, 

 and his munificence to Yale are his legacies to the higher education of 

 mankind. 



Although Marsh was an ardent collector in archeology, he published 

 ver}^ little on this subject, and his paper (1866) on an ancient sepulchral 

 mound near Newark, Ohio, is practically the only one. His three min- 

 eralogical papers, published between 1861 and 1867, show the results of 

 considerable labor and careful investigation. They treat of the gold of 

 Nova Scotia, a zeolite mineral from the same region, and a catalogue of 

 the mineral localities of the maritime provinces of Canada. 



In the field of invertebrate paleontology he likewise was an indefat- 

 igable accumulator of material, though after 1869 he published nothing 

 in this department. Two papers presented some annelids considered as 

 new, from the Jurassic of Germany. Another showed the origin of the 

 double lobe-lines in Ceratites. His papers on American invertebrates com- 

 prised a description of a new genus of fossil sponge (Brachiospongia), a 

 new form of crustacean trail from the Potsdam sandstone, and a note on 

 color markings in Endoceras. He also showed that Palseotrochis and 

 Lignilites were not of organic origin, though the contrary had been pre- 

 viously supposed. 



In the domain of geology his chief interests lay in the.formations from 

 which he secured important series of fossil vertebrates. Probably his 

 greatest geological discovery was the Uinta basin, an Eocene deposit of 



