Two vertical folds and two horizontal folds, some soiling around the edges, slight yellowing, otherwise good, intact. Size: approx 30cm (W) by 28 cn (L)
Hand-coloured to show Singapore’s geology based on the following divisions: Coral, Alluvial, Shale, Sandstone, Plutonic Rocks, Creeks and Altered Cherty Rocks.
Most likely taken from the 1851 publication: Notices of the geology of the Straits of Singapore.
About the publisher (from wikipedia):
James Richardson Logan (b 10 April 1819 Berwickshire, Scotland, d 20 October 1869 Penang, Straits Settlements) was the man who popularised the name Indonesia after it was coined by the English ethnologist George Windsor Earl. He was a prominent lawyer, an editor of the Pinang Gazette and a former student of Earl who in 1850 published the term ‘Indu-nesians’ to describe the peoples of the region.
Logan died on 20 October 1869 and is buried at the Old Protestant Cemetery in George Town. A marble statue of him stands in the compound of the Penang High Court building. Logan Road is named after him.
A lot more about J R Logan here.