When a Frenchman was praising to Sir John Sinclair the artist who invented ruffles, the Baronet shrewdly remarked that some merit was also due to the man who added the shirt.
A distinguished living mechanic thus expresses himself to the Author on this point:--"Kings, warriors, and statesmen have heretofore monopolized not only the pages of history, but almost those of biography.

Surely some niche ought to be found for the Mechanic, without whose skill and labour society, as it is, could not exist.

I do not begrudge destructive heroes their fame, but the constructive ones ought not to be forgotten; and there IS a heroism of skill and toil belonging to the latter class, worthy of as grateful record,--less perilous and romantic, it may be, than that of the other, but not less full of the results of human energy, bravery, and character.

The lot of labour is indeed often a dull one; and it is doing a public service to endeavour to lighten it up by records of the struggles and triumphs of our more illustrious workers, and the results of their labours in the cause of human advancement." As respects the preparation of the following memoirs, the Author's principal task has consisted in selecting and arranging the materials so liberally placed at his disposal by gentlemen for the most part personally acquainted with the subjects of them, and but for whose assistance the book could not have been written.

The materials for the biography of Henry Maudslay, for instance, have been partly supplied by the late Mr.Joshua Field, F.R.S.