APPENDIX. 



never lost sight of his favourite study, and by his diligence and 

 accuracy in the investigation of a then neglected branch of Botany 

 (the Mosses) he established for himself an imperishable reputation. 



In 1785 he published the first Fasciculus Plantarum Crypto- 

 gamicarum Britannice, and this was followed by three other Fas- 

 ciculi in the years 1790, 1793 and 1801. The materials for this 

 work were in great part collected by him during tours made in the 

 Highlands of Scotland in the year 1785, and several subsequent 

 years, until 1791. In the tour made by him in 1789, he was accom^ 

 panied by the enterprising and unfortunate Mungo Park. In 1793 

 he began the publication of his Hortus Siccus Britannicus, which 

 was continued till 1802, and then completed in 19 Fasciculi. 



Mr. Dickson was twice married, the second time to a Sister of 

 Mr. Park, who survives him. He died at his house near Croydon 

 on the 14th of August last, in the 85th year of his age, leaving two 

 daughters, and a son who succeeds him in his business, and whom 

 I have this day to propose as a Candidate to become a Fellow of 

 this Society. 



