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there was conjoined, when the preliminary arrangements had been 

 made, that of the Chair of Chemistry. He held these offices till 1879, 

 when the state of his health induced him to resign them, and to retire 

 almost completely from active work. He continued to take a keen 

 interest in the progress of Science till his death on the 5th November, 

 1885. 



He was elected a Fellow of the Royal Society in 1849, he was an 

 Honorary Fellow of the Royal Society of Edinburgh, and a Corre- 

 sponding Member of the Royal Society of Gottingen. He received 

 honorary degrees from various Universities. 



He presided over the Chemical Section of the British Association 

 at Belfast in 1852, and again at Edinburgh in 1871, and was President 

 of the Association at the Glasgow Meeting in 1876. 



In 1842 Dr. Andrews married Jane Hardie, daughter of Major 

 Walker of the 42nd Highlanders. He is survived by Mrs. Andrews, 

 by three daughters and by two sons, the elder of whom is Major 

 in the Devonshire Regiment, and the younger a member of the Irish 

 Bar. 



Dr. Andrews was deeply interested in public affairs, but very rarely 

 took an active part in politics, and was quite free from party spirit. 

 His only writings bearing in any way on political matters are ' Chapters 

 of Contemporary History.' The first, entitled " Studium Generale," 

 and published in 1867, is a historical and critical discussion of the 

 function of a University, with special reference to the Queen's 

 Colleges. The second, " The Church in Ireland," was published in 

 1869. 



Of Dr. Andrews' strictly Chemical papers we may mention one on 

 the blood of cholera patients, in which he showed that it differs from 

 normal blood only by having a smaller proportion of water ; one on 

 galvanic cells with strong sulphuric acid as the exciting liquid, and 

 one on the presence of metallic iron in basaltic and other rocks. Much 

 more important than these careful and interesting papers is his great 

 work on Ozone. This mysterious body had been the subject of in- 

 vestigations by its discoverer, Schonbein, and also by Marignac, De la 

 Rive, Berzelius, Williamson, Fremy and Becquerel and Baumert, but 

 its real nature was still unknown, it was not even certain that a number 

 of different substances had not been confounded under the name. 

 That ozone, however prepared, contained oxygen, and was a powerful 

 oxidising agent was certain, but it was not clear that it did not, some- 

 times at least, contain hydrogen also. Andrews attacked the problem 

 with characteristic energy and straightforwardness. By a series of 

 experiments, in which it is difficult to say whether the ingenuity, the 

 perfect fitness for their purpose, or the wonderful simplicity of the 

 methods used is to be most admired, he proved that "ozone, from what- 

 ever source derived, is one and the same body, having identical 



