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decided support to the defenders of Scripture. He saw no 
_necessary discrepancy on that subject between the teachings 
of science and the teachings of revelation. “ The writer,” 
he remarks in his preface, “ after studying the subject for 
many years, has formed the opinion that the geological facts 
are not only not inconsistent with sacred history, but that 
their tendency is to illustrate and confirm it.” With re- 
spect to the Mosaic account of the Deluge, he expresses him- 
self even more strongly. “ Geology,” he says, “ fully con- 
firms the Scripture history of that event.” 
In 1830 he published an elaborate treatise on General 
Chemistry, in two volumes, octavo, entitled “ Elements of 
Chemistry in the order of the Lectures given in Yale Col- 
lege.” It lays no claim to originality in the treatment of the 
subject. From the results of his own laboratory, and from 
his much reading, he gathered up all the known facts and 
laws of the science, and embodied them in a form which he 
deemed most convenient for instruction. His object, as ex- 
pressed in his own language, was “to unite copiousness 
with condensation, perspicuity with brevity, and a lucid 
order and due connection of subordinate parts with a gen- 
eral unity of design.” The work was, we believe, well 
received by the scientific public, and somewhat extensively 
used for the purpose of elementary instruction. In the 
judgment of a contemporary journal entitled to high con- 
sideration, “it was a work that was needed,” and that 
Was “ ws adapted to the vigil for which it was 
prepared.’ 
In 1851 Professor Silliman made a second visit to Europe. 
Forty-five years had wrought great changes in the scientific 
circles familiar to his first visit. Many whom he had once 
| known were no more. He had the happiness, however, of 
personally meeting many others whom he had long known 
