Peasant musicians, Czechoslovakia Finish:none Colours observed within layers of

Colours observed within layers of mica (figures a-f) with concentric circles of sixteen colours based upon Isaac Newton's observation of colours produced at the contact of two telescope object-glasses (figure g)

some of his advocates claim

showing details of the brain and nervous system

Botanical study of the Evergreen honeysuckle

The new nation of Iraq came into being in 1921

Peasant musicians, Czechoslovakia Finish:none Colours observed within layers ofPeasant musicians, Czechoslovakia, 1922. Illustration from Peoples of All Nations, Their Life Today and the Story of Their Past, volume II, British Empire to Dahomey, edited by J A Hammerton, (Educational Book Co, London, 1922).