ANNIVERSARY ADDRESS OF THE PRESIDENT. XXXV 



Brodie. Long before this, however, Dr. Dauheny had been appointed 

 Professor of Jiotany (1834), and had migrated to the Botanic Gar- 

 den, founded in 1032 by the Earl of Danby, and there delivered his 

 lectures on chemistry and botany. Here, during many years of 

 incessant activity, he instituted numerous experiments on vegetation 

 under different conditions of soil, on the eifects of light on plants 

 and of plants on light, on the distribution of potash and phos- 

 phorus in leaves and fruits, examined the conservability of seeds, 

 measured the ozonic element of the atmosphere, and tested the 

 effect of varying proportions of carbonic acid on plants analogous to 

 those of the Coal-measures*. In 1831 appeared his sketch of the 

 Atomic Theory. A favourite subject of research with Dr. Daubcny, 

 naturally springing from his volcanic explorations, was the chemical 

 history of mineral waters. The presence of iodine and bromine in 

 some of these formed the subject of a paper in the ' Philosophical 

 Transactions' for 1830; and a lleport to the British Association in 

 1830 included a general survey of mineral and thermal waters. 

 This subject was not neglected in his Korth American tour (1837- 

 1838), which contains a great number of interesting observations 

 on the character of the country which he- traversed, and its educa- 

 tional institutions, where he was heartily welcomed. 



Dr. Daubeny communicated to the Geological Society in 1844 the 

 results of a journey undertakeii by him with Capt. Widdrington, 

 ll.N., F.li.S., to the south-east of Spain, for the purpose of inves- 

 tigating the conditions of occurrence of the phosphorite of Logrosan. 

 He was accustomed to travel on the Continent almost every year, 

 and generally brought back with him notes serving to illustrate 

 some of his favourite subjects. 



So soon as the ar;rangements were made for the location of che- 

 mistry in its new abode at Oxford, Dr. Daubeny took the occasion 

 of resigning the Chair of Chemistry, and used all his influence to 

 increase the efficiencj- of the office and secure the services of the 

 present eminent professor. In his position as a teacher of Botany 

 he took pleasure in drawing attention to the historical aspects of his 

 subject, and specially, as a part of his duty, treated of rural economy 

 both in its hterary and in its practical bearing. Hence arose the 

 'Lectures on Boman Husbandry' (1857), written in a style very 

 creditable to the classical training of his early years, and contain- 

 ing a full account of the most important passages in Latin authors 

 bearing on crops and culture, the treatment of domestic animals, 

 and horticulture. To this is added an interesting catalogue of the 

 plants noticed by Dioscorides, arranged in the modern JSTotural 

 Orders. This was followed after a few years by a valuable ' Essay 

 on the Trees and Shrubs of the Ancients,' and a ' Catalogue of the 

 Trees and Shrubs indigenous in Greece and Italy' (1865). During 

 a few late winters Dr. Daubeny found it desirable to exchange his 

 residence in Oxford for the milder climate of Torquay. Here his 

 activity of mind was equally manifested by public lectures on the 



* Miscellaneous Memoirs and Essays, 1867 ; British Association Eeports, 

 1837-1857. 



