Extract of a letter, from Robert Clarke to Martin Lister, dated at Lincoln Concerning the death of a mastiff dog upon hearing a volley of shots from soldiers's rifles Asking Lister's opinion about a man who has coughed up something (as depicted in figure) and asks what it could be Lister adds a comment that it might be 'polypus's of the lungs' Printed in 'Philosophical Transactions', vol 19, no 235, p 779 Read to the Royal Society on 17 November 1697 8 November 1697