259 
stances which Cornwall affords, of the important phenomena of the 
injection of granite into slate, and the metamorphic condition of 
the slate thence resulting ; whilst a well-exposed tin vein at the base 
of the ancient fortress and monastery that crown this insulated 
mountain, affords specimens of Apatite, and is more richly studded 
with minute but perfect crystals of topaz than any other vein known 
to exist in this country. These easily accessible examples of pha- 
nomena, most highly interesting to the mineralogist and geologist, 
he carefully preserved for the inspection of the numerous visitors 
that are continually attracted to this spot—of threefold interest, to 
the antiquary, the artist, and the mineral philosopher. 
A similar zeal for the preservation of interesting scientific objects 
induced Dr. Jenner to preserve, for the benefit of geological visitors, 
a rock which presented the rare phenomenon of organic remains 
intermixed with toad-stone, on the side of a trap dyke intersecting 
old red sandstone at Newport, near his residence at Berkeley. 
To the nucleus formed by Dr. Babington’s collection, Sir John 
St. Aubyn made large additions, not only from the productions of 
Cornwall, but also from foreign countries, particularly the mines of 
Germany and Hungary, many of which are no longer wrought. 
This collection was very rich in the ores of gold, silver, copper, 
and other metals, and particularly in native diamonds and gems. 
The arrangement of it was begun by Count Bournon, but subse- 
quently completed after the system of Mohs. 
In 1834 he presented the bulk of his collection to the Devonport 
Civil and Military Library, of which he had been annually appointed 
President from its formation in 1827 until his death; and a collec- 
tion of Duplicates to the museum of Saffron Walden, near which 
place he then resided. He was an active member of the Geological 
Society of Cornwall, and of many scientific institutions in London ; 
had a knowledge of Chemistry, Conchology, and Botany; and was 
a patron of the fine arts and a collector during his whole life. 
In Brigadier CHar_es SILVERTOP the Society has lost the au- 
thor of many interesting communications to our Evening Meetings 
on the Geology of Spain, the mineral structure of which, notwith- 
standing its proximity to France and England, and the long-con- 
tinued military operations of both these nations upon its territory, 
is less known than that of any other portion of civilized Europe. 
