Professor Adams on the Theory of the Thermometer. 121 
precipitate of the carbonate of lithia. This mineral was 
discovered by Mr. Nuttall, during the last summer, in the 
town of Sterling, Massachusetts, on a farm belonging to Mr. 
utnam. 
Ashost time after having examined the above mention- - 
1 1, I discovered several specimens of the spodu- 
mene among a small collection of minerals from the yicin- 
ay of ea Mass. The specimens from this last men- 
published analysis of spodumene, it was not thought ne- 
cessary to repeat the examination. 
Arr. X.—Remarks on the theory of the shen oo of 
the Thermometer, by Rev. J. Apams, Professor athe- 
matics and Natural Philosophy in Brown eeeds, 
Pr ovidence, Rhode Island. 
It is highly important, ne the theory of the ae! ay 
ofan instrument, so extensively useful as the ther t 
should be well settled and well understood. It is used of 
ten in physics and constantly in chemistry ; and to it we 
are indebted for the greatest part of our information on the 
interesting subject df heat. The astronomer consults it in 
is observations, i in all cases, where refraction is an element. 
y it, we determine the mean temperature of the earth, 
and of the different climates upon its surface. Any effort 
therefore, towards establishing a correct theory of the con- 
struction of this instrument, it is a will be viewed by 
public. with candour and indulge 
wit is well known, that the prentest par 2 physical i inquirers 
ich they attribute 
pre properties analagous to those whidl other material 
substances possess; such as elasticity, the power of enter- 
ing into combination with other substances, Nc. hese 
ig they ge to it on the ground of analogy ; 
Von. VIIL—No. 
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