12 slides for Microscope by Ross?, English, c. 1850-75

Subject: Microscopy
Item type: Object
Makers: ? Ross
Provenance: Not ascertained. Probably belongs with Ross micr. Bl. 100.
Primary inscriptions: Compressor signed "Ross, London". Micrometer signed "Georges Oberhaeuser, Paris."
Physical material: Brass
Dimensions: Height: 75mm Width: 25mm Depth: 1mm Weight: 72g
Inventory No: 35854

Description

12 slides, 10 of which are blank, remaining two have specimens of sand and 'aristolochia sipho'.