A happy-go-lucky; neither craven nor valiant; taking perils as they came with an indifferent air; and while engaged in the most imminent crisis of the chase, toiling away, calm and collected as a journeyman joiner engaged for the year.
In 1651 he began to have revelations, and to proclaim himself and his cousin John Reeve, whose journeyman he was, as the two witnesses mentioned in Rev. xi.
Garrison then went to Boston, where, after working for a time as a journeyman printer, he became the editor of the National Philanthropist, the first journal established in America to promote the cause of total abstinence from intoxicating liquors.
He learned how to set type, and as a journeyman printer he wandered widely, going even as far east as New York.
He continued to work as a journeyman bookbinder till the 1st of March 1813, when he was appointed assistant in the laboratory of the Royal Institution of Great Britain on the recommendation of Davy, whom he accompanied on a tour through France, Italy and Switzerland from October 1813 to April 1815.