Letter, from Martin Lister to Henry Oldenburg, dated at York Signed autograph Observations of insects found in England in 1666 and 1667; anatomical observations and experiments to show the movement of chyle in veins by injecting various liquids in the intestines of animals; wishes to send an improved table of snails Read to the Royal Society on 28 May 1673 Transcription in 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall & Marie Boas Hall, vol 9, p 658 Printed in 'Philosophical Transactions', vol 8, no 95, p 6060 21 May 1673