Boy with hoop, opalotype, late 19th century.

X-ray experiment, late 19th-early 20th century.

Surgeon's tools and case, late 18th or early 19th century.

Rocking microtome, 1885.

Caldwell automatic microtome, 1884.

Caldwell automatic microtome, 1884.

Artificial hand in a leather glove, Europe, late 19th-20th century.

Musschenbroek hand microscope, Dutch, late 17th century.

Sir Arthur Cayley, English mathematician, late 19th century.

Edwin Lankester, English physician and botanist, late 19th century.

A collection of carte-de-visite, 19th century.

Eight kinds of cameras and lenses, mid to late 19th century.