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BY C. E. BECOME, E.L.S. 



TK the Flora Bristoliensis, by Mr. Swete, published in 1854, a 

 -^ radius of five miles from the city of Bristol cs a centre, was 

 adopted as a convenient arrangement, both as regards the geology 

 of the district and the distribution of the plants upon its surface, 

 and we cannot do better than follow his steps generally, as we 

 thus keep within a distance not too extended for a ramble in 

 search of Fungi. The connection of the flowering plants with 

 the kind of rock on which they grow is manifest, and although 

 Eungi do not depend to sach an extent on the nature of the soil 

 as on the amount of warmth and moisture — resulting from the 

 presence of woods and sheltered spots, and the kind of trees and 

 shrubs with which the earth is clothed, — yet, as the latter depend, 

 in some measure, on the geological character of the soil, an 

 indirect connection is maintained between the geology and the 

 mycology of a given surface But, besides this, a more immediate 

 cause for a rich mycological flora arises from the varied com- 

 position of the rocks around Bristol, and the great amount of 

 their dislocation and upheaval. We find the surface of the 



