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Proceedings of the Royal Society of Edinburgh. 



Feb. 6. 1826. L here was read a Notice respecting the 



late severe cold in Inverness-shire and Aberdeen, as communi- 

 cated to Dr Brewster in Two Letters from J. P. Grant, Esq. 

 M. P., and George Fairholme, Esq. 



Feb. 20. — Mr Bald read a Notice on a Fine Sand found near 

 Alloa fit for making Flint Glass. There was also read a Letter 

 from Professsr Moll of Utrecht to Dr Brewster, on a New Island 

 in the Pacific. 



March 6. — A paper by Dr Brewster was read, on the Re- 

 fractive Power and other properties of the Two New Fluids in 

 Minerals. 



March 20. — A paper by Mr Stark was read, on Two Spe- 

 cies of Pholas found on the Coast in the Neighbourhood of 

 Edinburgh. And Dr Knox read a paper on the Size of the 

 Teeth of the Shark. 



April S. — There was read a paper on a Singular Phenomenon 

 in Vision, by Mr Thomas Smith, Surgeon, Kingussie. And 

 a Notice by Dr Brewster was read on the Advantages of making 

 Simultaneous Meteorological Observations in different parts of 

 the Kingdom, on one or more days of every year. 



April 17. — There was read a Description of a New Register 

 Thermometer, without any Index, by H. H. Blackadder, Esq. 



May 1. — Mr H. H. Blackadder read a paper, entitled. Ob- 

 servations on the colour and constitution of Flame. (This paper 

 is printed in the present Number, p. 52 et seq.) At the same 

 meeting, Dr Brewster exhibited to the Society a new Monochro- 

 matic Lamp. And a new Safety Gas-burner, invented by Mr 

 W. Warden, was also exhibited. 



The Society adjourned till December. 



Proceedings of the Wernerian Natural History Society, 



1826, Feb. 11. — Jl rofessor Jameson communicated a note 

 of low temperatures, observed by Mr Grant, at his seat of Ro- 

 thiemurchus, in the Highlands of Scotland, during the late se- 

 vere frost of January ; the lowest being 6° below 0, and this 

 extreme cold continuing for several hours. 



