Accession No

1497

Brief Description

Sorby-Browning type micro-spectroscope, former property of Professor George Henslow, by John Browning, English, 1875 (c)

Origin

England; London; Strand

Maker

Browning, John

Class

optical; chemistry; laboratory apparatus

Earliest Date

1875

Latest Date

1875

Inscription Date

Material

metal; brass; steel; glass

Dimensions

overall length 161mm box length210mm; breadth140mm; height 84mm

Special Collection

Provenance

Presumed transferred from the Botany Department, University of Cambridge. Exhibited at the Old Schools, University of Cambridge, with other instruments from the Botany School in 1936.

Inscription

‘John Browning,
London’ (main tube)

Description Notes

Sorby-Browning type micro-spectroscope (aka microspectroscope), by John Browning, English, c. 1875. Former property of Prof. George Henslow.

Brass; screw fit draw tube adaptor for microscope with a screw fit lens; brass jaws; screw adjustment of slit width; reflecting prism; side plate with a second slit, brass jaws and screw adjustment for width on a brass mount with steel clips for holding specimen tube, and a swinging mirror on an arm with screw thread adjustment; push fit draw tube for eyepiece; push fit eyepice with condensing lens and five direct visions prisms wedged in with pieces of cord; push fit eye end.

Wooden box with microscope slide and homemade microscope accessory; paper label on box lid with, in longhand, ‘From Prof. G. Henslow.’

Good condition.

References

Events