152 Vaccination. 



and killas. The sicnite and granite in some places are co- 

 vered by the killas; in other places the granite and sienile 

 rest upon the killas ; and ProFessor Jameson also observed 

 the kilias alternating with beds oF granite and sienite, anci 

 veins shooting from the granite into the adjacent killas. 

 The eranitAus rocks, besides felspar, quartz, mica, and 

 hornblende, also contain imbedded rutilite, tilanilic iron- 

 ore, and molvbdeua; and, in rolled masses of a reddish- 

 coloured sienite, crystals and grains of gircon were observed. 

 Professor Jameson also staled several of the characters of the 

 killas, dfcscrit)ed the magnetic pvritcs it contains, noticed 

 Its affinity with certain rocks of the transition classj and 

 exhibited specimens to illustrate this affinity. 



At the same meeting there was read a series of ther- 

 momeincal observstions on the temperature of the Gulf 

 sircam, by Dr. Manson, of New Galloway: and a descrip- 

 tion of a new craninmeter, proposed by Mr. W. E. Leach^ 

 illustrated by a sketch. 



A XI I. Intelligence and Miscellaneous Articles. 



VACCINATION. 



*^N' this subject we have lately seen an address by Edwar4 

 Kigby, Esq. senior surgeon of the Norfolk and Norwich 

 hospital, to the Corporation of Guardians of the Poor o^ 

 the city, which presents some facts that cannot be too 

 generally known. This gentleman, while variolous ino- 

 culation was the only method known for lessening the 

 ravages of the stualUpox, was ever ready, not only to 

 inoculate the poor gratuitously, but omitted no opportu- 

 nity, either by writing or by conversation, to protliote its 

 general adoption ; but Providence having placed in our 

 hands nseans of security against that loathsome disease 

 equally efficacious and much loss exceptionable, namely 

 vaccination, Mr. Rigby has been one of its most strenu- 

 ous advocates, and has excited hunself to root out the 

 sniall-pox entirely, from Norwich and its neighbourhood, 



ATier stating some of the measures that he had recom- 

 ".nended, but which it would appear had not been suffi- 

 r'.cntly attended to, — he states, th-it '■' the small-pox did 

 disappear in the autumn of 18()6: it had seized on all the 

 victims within its reach, and, like a fire, ceased to burn 

 r>n!y for want of additional fuel ; nor did it again visit the 

 city fill August lb07, when it was introduced in the fol- 

 lowing way : — 



'^ On the Monday of the Assizc-wcck in that year, Mr. 



iiubinson. 



