Amber; a Piece of Opacus Yellow; a large Piece of Yellow Amber very clear and fine, which the ingenious Mrs. Sus. Maddox brought me from Prussia, with a Piece of pale Yellow, of White, and of Citron Colour, together with Fossil Amber from the same Country; and one Bit, that being broke discovers four distinct Colours in less than half an Inch. Amber with a Flye enclosed, the Feet and Wings extended very distinct. One with a Spider as perfect, that Mr. Tho. Denison brought from Prussia, and presented to me. An oblong Piece, wherein both a Spider and a Fly are immersed. Don. D. Moisis Ashenden M. D.