86 The Americav GeolofiisI . August, 1897 
world. " From an attentive study of the structure of the 
earth," he states, "we cannot fail to discover that it has been 
made after a preconceived plan, and that the highest wisdom 
is manifested in the adaptation of the world to the uses of 
man." 
Scientific work mainly occupied the attention of Dr. Jack- 
son until 187.3. Then his active mind gave way. The recovery 
for which his friends hoped never came; and on the 28th of 
August, 1880, after seven years of suffering, Dr. Jackson died 
in a department of the Massachusetts General Hospital. 
Dr. Jackson is described by those who knew him as an en- 
thusiastic person, a ready conversationalist, even eloquent in 
his speech, and fond of telling stories. His friend. Dr. C. A. 
Bartol, whose church Jackson attended, says of him that he 
"was simple as a child and veracious like the sun." The con- 
troversies in which he became involved brought out his fight- 
ing qualities. "He was a man," states Dr. Bartol, "whose self- 
respect did not allow him to waive his own claim, and of 
course his attitude could not please those who were inclined 
to reduce them to the lowest point." 
He is remembered as a rather large man, who might be seen 
in his laboratory absorbed in work and unmindful of his per- 
sonal appearance. The portrait reproduced in this sketch 
represents him as a young man. In a photograph taken later 
in life, the head appears more massive, the shoulders squarer; 
the beard covers more of the cheeks; the physiognomy exhib- 
its more firmness and something of complacency, for despite 
disappointments, Dr. Jackson received recognition and hon- 
ors for the share he had in the use of anaesthetics in surgery. 
Dr. Jackson was a member of numerous learned and scien- 
tific societies in his own country and abroad. The plain title 
page of his Rhode Island report makes known that the author 
is a Fellow of the American Academy; Member Geol. Soc, 
France; Memb. of Imperial Min. Soc, St Petersburg; Memb. 
Boston Society Nat. Hist.; Cor. Memb. Acad. Nat. Sci., Phil.; 
Lyseum Nat. Hist., N. Y. ; Albany Inst. ; Nat. Hist. Soc, Mon- 
treal ; Providence Franklin Soc ; Hon. Memb. Maine Inst. Nat. 
Sci. He was also a member of Amer. Assoc. Geol. and Nat., 
of which organization he was chairman in 1845-46. Later he 
became Chevalier de la Legion d'Honneur; Caviliere dell Or- 
