Mathematical model to illustrate crystal formations on a triangular base, of cardboard covered plaster of Paris in colours, made by Alexander Crum Brown, Professor of Chemistry at the University of Edinburgh, c. 1880

Mattheddleite - microscopic white crystals - associated with grey acicular aggregates of lanarkite, grey platy leadhillite and earthy yellow-green pyromorphite - probably from Susanna Mine, Leadhills, Lanarkshire.

Mat, rushes secured with cord, used for offerings made during the bear ceremony (iyomante): Japan, Hokkaido, Ainu, 19th to early 20th century

Matchlock gun, with an iron barrel decorated with paulownia sprays, a phoenix and Tokugawa crest, with a stock and butt, mounts, trigger, a match-holder, ramrods missing: Japan, probably 18th century

Mat made by hand from leaves of a species of Freycinetia: Polynesian, Samoa

Mat of plaited pandanus leaves: Polynesian, Tonga

Matashi (cushion cover) of buff leather, circular and decorated with coloured leathers and fringed: West Africa, Nigeria, Katsina State, Hausa people

Fringed mat: Pacific Peoples, Fiji

Mat of plaited pandanus leaf dyed red and brown: Pacific Peoples, Fiji, late 19th century

Matting used for canoe streamers: Pacific Peoples, Fiji

Spearhead or mataa nutakuku of obsidian chipped into a leaf shape with stem: Polynesian, Rapa Nui (Easter Island)

Shark fishing hook (matau hiimao) formed of casuarina wood, with attached looped line of coconut fibre wound round with sinnet: Oceania, French Polynesia, Tuamotu Islands, before 1895

Mat of plaited palm strips interwoven with dark strips in a zig-zag and diamond pattern: Africa, Eastern Africa, Malawi, late 19th century

One of two plaited palm strip mats: Africa, Malawi

Currency 'mat' in form of a long narrow strip of woven grass, dyed red, and fringed at each end: Melanesian, Vanuatu

Oblong mat of wool woven with a fret border in blue and white, and centre of coloured floral pattern: Tibet