By Dharampal
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Additional resources for Indian Science and Technology in the Eighteenth Century (The Collected Writings of Dharampal Vol. I)
Example text
Pearse, sent by him to the Royal Society, London, and surviving in their archives, refers to the Indian knowledge of the four Satellites of Jupiter and the seven Satellites of Saturn. Pearse further felt that the Indians must have possessed some kind of telescopic instruments to have acquired such detailed knowledge. The author of Pearse’s memoirs, while including a slightly modified version of this piece in the memoirs, states: We cannot pass this interesting communication without offering some reflection upon the subjects it embraces.
Assuming that a furnace on an average worked about 35-40 weeks a year, the potential production of iron per furnace may be assumed at 20 tons annually. Besides the furnaces and accessories so graphically described in Chapter XV, certain other devices varying from area 23 to area also appear to have been used in Indian metallurgy. One such was the use of the Panchakki (water-mill) in the crushing of ore by the manufacturers of Kumaon and Garhwal. D. Herbert and J. Manson ‘in reducing the ore to fragments, the Dhunpoor miners employ the Panchakki or water-mill.
But even they, when they came forth with such plans, were at great pains in stating that such production would in no way injure the production in Britain or the consumption of British iron in India. Even this type of proposition was, however, difficult for the British Government to contemplate. ’47 25 IV Many other aspects of science and technology are not at all referred to in the accounts which are reproduced in the following pages. Textiles, armaments, horticultural techniques, or the breeding of animals are among those omitted aspects.