138 The American Geologist. March, 1905 
determined, and strenuous to a remarkable degree. He 
hated pretense of any sort. He possessed a singularly 
original and independent mind and the keenest powers of 
observation. 
Hatcher was 32 years of age when his first paper was 
published, and during the last ten years of his life he wrote 
46 articles, the largest of which is the "Narrative and Geo- 
graphy" of Patagonia. In manuscript he has another large 
volume — "A monograph of the Ceratopsia" — nearly com- 
pleted. There is considerable variety in his work, as may 
be seen from the following summary : 25 papers are pale- 
ontologic, 16 stratigraphic, 4 physiographic, i ethnologic, 
and I a narrative. 
While Hatcher is famous as a collector of vertebrate 
fossils and as a Patagonian explorer, he also stands among 
the leaders of vertebrate paleontologists. His biologic 
Avork is that of a careful osteologist, never going deeply 
into morphology. He likewise attained pre-eminence as a 
stratigraphic vertebrate paleontologist. During the past 
twenty years he entered the field each year for many 
months at a time, and saw more varied stratigraphy and 
■collected more vertebrate remains than any other man. 
Outside of the Triassic and the Lower Cretaceous, he had 
studied all the formations of the Mesozoic and Cenozoic 
of the great West. This knowledge was to bear fruit in 
the coming years, as he had agreed to cast in his lot with 
"the U. S. National Museum and to take advantage of the 
splendid opportunities for consultation with the many ac- 
tive geologists and paleontologists of the U. S. Geological 
Survey, His greatest days were to come, and four mu- 
seums were to reap the harvests of his stratigraphic 
knowledge and thus to place vertebrate paleontology upon 
a sounder chronologic basis. "Hatcher was cut oflF just 
when his powers and opportunities had reached their fullest 
development and the boundless field, in which he so loved 
to work, lay open and unrestricted before him." (Scott). 
In 1887, he married Miss Anna M. Peterson, who with 
lour children survives him. 
