AND MODERN PHYSICS. 89 



but conducted his lectures and experiments at the 

 laboratory as usual. 



About this time some of those who had been 

 "Apostles" in 1853-57 revived the habit of meeting 

 together for discussion. The club, which included 

 Professors Lightfoot, Hort and Westcott, was chris- 

 tened the " Eranus," and three of Maxwell's contribu- 

 tions to it have been preserved and arc printed by 

 Professor Campbell 



After the Cavendish papers were finished, Max- 

 well had more time for his own original researches, 

 and two important papers were published in 1879. 

 The one on " Stresses in Rarefied Gases arising from 

 Inequalities of Temperature" was printed in the 

 Royal Society's Transactions, and deals with the 

 Theory of the Radiometer ; the other on " Boltzmann's 

 Theorem " appears in the Transactions of the Cam- 

 bridge Philosophical Society. In the previous year 

 ho had delivered the Redo lecture on " The Tele- 

 phone." Ho also began to prepare a second edition 

 of " Electricity and Magnetism." 



His health gave way during the Easter term of 

 1879 ; indeed for two years previously he had been 

 troubled with dyspeptic symptoms, but had con- 

 suited no one on the subject. He left Cambridge as 

 usual in June, hoping that he would quickly recover 

 at Glenlair, but he grew worse instead. In October 

 he was told by Dr. Sanders of Edinburgh that he had 

 not a month to live. He returned to Cambridge in 

 order to be under the care of Dr. Paget, who was able 

 in some measure to relievo his most severe suffering 

 but the disease, of which his mother had died at tho 



