719 



very sparingly distributed ; and I think it docs not at all follow that 

 a plant has been introduced because we only find it in one or two 

 localities. 



" In conclusion, may I express a hope, that should anybody pay a 

 visit to the plant they will exercise towards it the conservative spirit 

 of the true botanist, and not go with the eradicating hand of the mere 

 plant-collector." 



Flora of Stirrey. 



The President referred to a communication he had received from 

 Mr. Salmon, relative to two previous communications, published in the 

 July number, critically commenting on the paper in the May number 

 intituled * On the Division of the County of Surrey into Botanical 

 Districts, with a view to the Preparation of a Flora of Surrey.' Mr. 

 Salmon thought that the prefatory notice which had been printed and 

 circulated with the separate copies of the paper would fully meet the 

 views of the objectors. This notice, dated February 6, 1852, is as 

 follows : — 



" About three years ago, a few friends, devoted to the pursuit of 

 Natural History, resolved, at a meeting held for this purpose in the 

 town of Guildford, to take steps for collecting and arranging the ma- 

 terials existing or procurable in order to compile a complete Flora of 

 the county of Surrey. With this object the map of the county was 

 divided into nine poi'tions, representing as many districts, or divisions, 

 with reference, as far as practicable, to the geological formations ; also 

 blank forms were prepared, and transmitted to all who felt an interest 

 in the subject, or who were willing to supply information. 



" On reference to the accompanying map, it will be seen that the 

 three northern districts, or divisions, from east to west, along and 

 lying to the south of the river Thames, include the greater part of the 

 London clay, pne of the three primary groups of strata ; also that the 

 three central divisions include the chalk, and the three southern the 

 wealden, formation. 



" In order to determine accurately the natural vegetation of each 

 district, it was found necessary to define the various boundaries by 

 limits more definite than the strata afford ; and rivers, canals, rail- 

 roads, and highways were adopted as the interior lines of demarca- 

 tion. Of course the river Thames is the northern boundary-line of 

 the three northern districts ; and the counties of Kent, Sussex, Hamp- 

 shire, and Berkshire form the external boundaries on the east, south, 

 and west. 



