Letter from Sidney A Sworn, on his paper 'On the conditions which render absolute the readings of the mercurial thermometer absolute' to Arthur William Rucker Responds to referee's criticism. One of the referees 'appears to overlook the fact that there is a great difference in the conditions' and his observations on this appear to be correct. Although the referee overlooked this, he is of opinion that the work should be carried out for the full range'. Subject: Physics [Not published]. 25 July 1897