Combining various objects, often many 100s (or 1000s!) of individual butterfly or insect scales, diatoms, spicules, etc.; each piece was individually selected and painstakingly placed to create the pictures or complex geometric arrangements. Some of the finest examples of these amazing “picture” slides (using primarily butterfly and insect scales) were made in the last quarter of the 19th Century by H. (Harold) Dalton, and were then sometimes factored through W. Watson & Sons of London, carrying their secondary labels.
Details of the first picture here.
For the other pictures, over here.
Surely one would have to have the patience of a monk, to pull this one off. Impressive!
Yet another fine blog…. 😅 