Silkworm. Coloured scanning electron micrograph (SEM) of the head of a silkworm moth caterpillar (Bombyx mori). The silkworm uses its chewing mouthparts (upper centre) to feed on mulberry leaves. On either side of the mouthparts is an antenna and several simple eyes (ocelli, black round structures, upper left and right). The caterpillar has three pairs of jointed legs behind the head (lower centre). Most caterpillars also have prolegs further along the body (not seen). The silkworm produces threads of silk with which it constructs a cocoon. People farm silkworms for their silk, which is woven into cloth. Magnification: x25 when printed 10cm wide.
© Eye Of Science/Science Photo Library
Caterpillar track steam engine by R. Hornsby & Sons
The first and original 'Caterpillar' or 'walking' engine made by R. Hornsby & Sons of Grantham. R. Hornsby & Sons grew into a major manufacturer of agricultural machinery, at their Spittle Gate Works. The firm went on to produce steam engines used to drive threshing machines and other equipment such as traction engines; their portable steam engine was one of their most important products and the market leader. Later a chain-track was added to an oil-engined tractor: the caterpillar track; these were developed and patented by Hornsby's chief engineer (and managing director), David Roberts, from July 1904. These were first used on tractors which served with the British Army towing artillery from 1910, but were later fitted to tanks which were used in the First World War from 1916. In 1909, a development model called the Little Caterpillar was demonstrated to the War Office. The army officers present at the demonstration believed it would frighten the horses!
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10282530
COCOA. Branch of a cocoa tree (Theobroma cacao). Line engraving by P. Sluyter after a drawing by Maria Sibylla Merian, from Merians 'De metamorphosibus insectorum Surinamensium,' 1705
COCOA. Branch of a cocoa tree (Theobroma cacao). Line engraving by P. Sluyter after a drawing by Maria Sibylla Merian, from Merian's 'De metamorphosibus insectorum Surinamensium,' 1705.
1705, Ann, Biology, Botany, Branch, Caterpillar, Chocolate, Cocoa, Cocoa Tree, Engraving, Entomology, Leaf, Maria, Merian, Moth, P, Pod, Sibylla, Theobroma Cacao, Zoology