Antique Microscope Slide. New Polycistina from Barbados by W.Watson.

Antique Microscope Slide. Vegetable Ivory

Antique Microscope Slide. Lilac Moth by W.Watson.

Antique microscope slide by Darlaston. Diatoms. Arachnoidiscus hungaricus.

Antique microscope slide by W.A.Firth. Selected Diatoms from Calvert County USA

Antique microscope slide by Harry B.Thomas. T.S. Lyania? braziliensis.

Antique Microscope Slide. Spicules of Gorgonia

Antique microscope slide by Norman. Chemical crystals. Platinocyanide of Yttria.