ow the Distribution of the Magnetic Intensity. 



13 



OBSERVATIONS AT EDINBURGH. 



The following Observations were made in the back Garden adjoining No. 8. St Colme 

 Street, on the very spot where Captain BASIL HALL made his observations with Captain SA- 

 BINE'S apparatus in the year 1827 ; but from the great quantity of iron-railing in the immediate 

 vicinity, I suspect the present observations may be affected by it. 



CYLINDER, No. I. First Arc 20. 



