16 President's Address. 



on Botanical Geograpliy, which appeared in the year 1840 

 in " Wiegmann's Archiv." for 1841, and which were regu- 

 larly continued in the same periodical till 1853 inclusive, 

 from which time an interruption occurred till 1872, when 

 they were resumed, and three notices up to 187G appeared 

 in Behm's " Geographical Year-Book." In 1844 he wrote 

 " On the Character of the Vegetation of Hardangen in 

 Bergen," in connection with his visit to Norway in 1842, 

 which was rich in its yield to botanical geography, and 

 which led to a lively epistolary correspondence between 

 him and Alexander von Humboldt. We find him again, 

 in 1847, writing " On the Lines of Vegetation in the Nortli- 

 West of Germany"; and five years afterwards (in 1852), 

 " A Commentary on the Geographical Distribution through 

 Europe of the Genus Hieracium" and in that year, along 

 with Schenk, who had been his fellow-traveller, he pub- 

 lished " Certain Observations on Plants collected from the 

 year 1851 on an Alpine Journey"; and also an account of a 

 " Hungarian Journey undertaken in 1852," with the same 

 companion; and " Contributions to the Systematic Arrange- 

 ment of the Flora of Hungary." This last appeared 

 in " Wiegmann's Archiv." for 1862. With Schenk he also 

 visited the Pyrenees in 1853. In the following year, in the 

 Gottingen Reports there appeared " Systematic Remarks 

 on the Collection of Plants by Philippi and Sechler in 

 the South of Chili and at the Straits of Magellan"; and 

 in 1857, " Systematic Remarks on the Vegetation of 

 some Islands in the Carribean Sea, especially of the 

 Island of Guadaloupe, after the Collection of Ducharssaing." 

 "Novelties of the Flora of Panama" was published by 

 him in the following year; while in I860, from the same 

 prolific pen, appeared " Select Illustrations of the Plants of 

 Tropical America." In 1864 he published a " Flora of the 

 British West Indian Islands," with which, at the request 

 of our Government, he had been engaged since 1857, during 

 which period he had six times visited this country in 

 connection with the publication, which he himself regarded 

 as one of great importance ; the relative Herbaria were 

 also sent to him, and it is a fact of some interest to us to 

 know that the names now attached to many of the West 

 Indian plants in the Botanical Garden are owing to the 



