George Humphrey, dealer in natural curiosities, No. 70 St. Martin's Lane, London, addressed this essay to collectors on board whalers coursing the Atlantic Ocean, from the Str. of Magellan to Boston. These collectors were under the direction of Mr. Stanesby, who decided whether to accept goods or cash in return for the specimens. A postscript bears the date 25 Mar. 1776 and is initialed G. H. Full title, “Directions for Collecting and preserving all kinds of natural curiosities, particularly insects and shells. London, 1776.” illustrated by 10 figures of insects and equipment, one colored plate of Shells showing 32 figures.