Antonii a Leeuwenhoek ... Epistolae physiologicae super compluribus naturae arcanis

Where the structure, conformation, properties, and operations of various animals and plants are illustrated and presented to the eyes through new and hitherto unobserved experiments. Also, the peculiar and previously unknown qualities of certain things are explained: as the following page teaches:

Hitherto never published, with copperplate illustrations and a very rich index.

A small decorative printer's mark features intertwined letters.