HA KOM ETHICAL REGJKTIIK KEPT AT ECCLE8 



27 



Silica, . 

 Alumina, 

 Lime, . 

 Magnesia, 

 Water, . 



44.300 = 2.2 Atoms. 

 40.400 = 1.7 ... 



0.755 



0.500 



13.500 = 1.2 



99.455 

 Considering the lime and magnesia as accidental, the formula will be 



A/ 1 * S* + Ay, or bi-subsesqui silicate of alumina. 



From the locality where the specimen analyzed was. procured, the 

 mineral may be termed Tuesite. 



Barometrical Register kept at Eccles Manse during the years 1832-33. 

 By ALEXANDER S. THOMSON ; with Observations by ROBERT D. THOM- 

 SON, M. D. 



THE Barometrical diurnal heights were registered at 10 A.M. regu- 

 larly. The mean altitudes for the several months of the year 1832-33 

 are collected in the following table : 



The subjoined observations are deduced from an inspection of this 

 register : 



1. The lowest station of the mercury during 1832 was 28.6 on the 

 5th of October, to which point it fell the same day from 29 inches ; and 

 this rapid subsidence was followed by a heavy rain, which continued for 

 several days. 



The greatest elevation of the barometer was 30.1 inches, which it at- 



