including a large and impressive lantern slide with a label for 'Hydrous Piceus' mounted in balm in a wooden frame, a collection of very well-mounted insects on standard magic lantern slides labeled 'East Indian Cockroach', 'Dragon Fly South America, Real insect mounted between two glasses in balm', Locust MexicoReal insect mounted between two glasses in balm', 'Lanternfly, China, Real insect mounted between two glasses in balm', 'Dragon fly', an image of W. H. Youdale using a microscope, along with a few other related slides (a lot)