FEBRUARY 22, 1884. ] 
instruments, and of accurate tables for the 
reduction of observations. Under the Smith- 
sonian auspices, he superintended the produc- 
tion of both, applying himself with assiduous 
labor, for several years, to the preparation and 
publication of the volume which bears his 
name, and of which a new edition was in prepa- 
ration before his final illness. It is easy to 
see that this work of a pioneer, in a depart- 
ment compara- 
tively new, was 
of fundamental 
importance. It 
helped on the me- 
teorological work 
which was long 
superintended by 
Professor Henry 
and the Smithso- 
nian observers, 
and was subse- 
quently devel- 
oped on a grand 
scale by the gov- 
ernment = signal- 
service. 
As we are not 
endeavoring to 
review in detail 
the scientific 
work of Mr. Guy- 
ot, but simply to 
point out some of 
the elements of 
his character, we 
pass on to his 
influence as a 
teacher. For a 
long while after 
he came to this 
country he was a 
professor without 
a desk, —a peri- 
patetic teacher, 
engaged by the 
Massachusetts 
board of educa- 
tion to unfold the 
right principles 
of geographical 
instruction. His remarkable insight into the 
relations of the ‘Earth and man’ had been 
developed in the atmosphere of Berlin, when 
Humboldt, Ritter, and Steffens were in their 
prime. He learned their methods of thought : 
he worked out hisown. His earliest utterances 
upon this subject were given at the Lowell in- 
stitute in 1849, when, with the cloquence of an 
SCTENCE. Zo 
original thinker, he showed how the earth was 
fitted to be the dwelling-place of the human 
race. His task was performed with such pro- 
found perception of the truth, and with such 
suggestive and stimulating reflections, that the 
unpretentious volume of lectures (notwithstand- 
ing the fact that science has revealed so much 
which was then unknown) remains to this day 
one of the best introductions to physical geog- 
raphy which the 
general reader 
can find in any 
language. The 
acquaintance 
which he formed 
with American 
schools and 
teachers showed 
him how poor and 
dry and imme- 
thodical were the 
geographies then 
in use, how flat 
and unsuggestive 
the maps. He 
endeavored to 
remedy the evil, 
and for years was 
occupied, with 
skilled co-opera- 
tors, in the pro- 
duction of a se- 
ries of wall-maps 
and text- books, 
which have since 
been used in ev- 
ery part of the 
land. It is not 
too much to say 
that they revolu- 
tionized the meth- 
ods of teaching 
geography. Ev- 
ery series of ge- 
ographies which 
has since ap- 
peared shows the 
Lnidime ncie = Ot 
xuyot. 
Duriny a peri- 
od of nearly thirty years he has been a pro- 
fessor in Princeton college, and his name is 
cherished by hundreds of loving pupils, who 
have found in him a friend as well as a teacher ; 
but until a recent period he was easily induced 
to lecture in other places, and his voice has 
often been heard in distant cities, expounding 
his favorite ideas. 
