luminous aid of study. How luminous and
how sure these combined became, his later works show best.

In 1834 Mr. Whistler accepted the position of engineer to the proprietors
of locks and canals at Lowell. This position gave him among other things
the direction of the machine shops, which had been made principally for the
construction of locomotive engines. The Boston and Lowell Railroad, which
at this time was in process of construction, had imported a locomotive from
the works of George and Robert Stephenson, at Newcastle, and this engine
was to be reproduced, not only for the use of the Lowell road, but for
other railways as well, and to this work Major Whistler gave a large part
of his time from 1834 to 1837. The making of these engines illustrated
those features in his character which then and ever after were of the
utmost value to those he served. It showed the self-denial with which he
excluded any novelties of his own, the caution with which he admitted those
of others, and the judgment which he exercised in selecting and combining
the most meritorious of existing arrangements. The preference which he
showed for what was simple and had been tried did not arise from a want of
originality, as he had abundant occasion to show during the whole of his
engineering life. He was, indeed, uncommonly fertile in expedients, as all
who knew him testify, and the greater the demand upon his originality, the
higher did he rise to meet the occasion. The time spent in Lowell was not
only to the great advantage of the company, but it increased also his own
stores of mechanical knowledge, and in a direction, too, which in later
years was of especial value to him.

In 1837 the condition of the Stonington Railroad became such as to demand
the continual presence and attention of the engineer. Mr. Whistler
therefore moved to Stonington, a place to which he became much attached,
and to which he seems during all of his wanderings to have looked with a
view of making it finally his home. While engaged upon the above road he
was consulted in regard to many other undertakings in different parts of
the country, and prominent among these was the Western Railroad of
Massachusetts.

This great work, remarkable for the boldness of its engineering, was to run
from Worcester through Springfield and Pittsfield to Albany. To surmount
the high lands dividing the waters of the Connecticut from those of the
Hudson called for engineering cautious and