M.-P— Vol. I.] CRAWFORD— CONSTANT OF REFRACTION. 



IO9 



Yale Observatory. The corrections which have been 

 applied to all the readings have been taken from the 

 following table sent from Yale Observatory: — 



The table which follows contains the uncorrected temper- 

 atures (t), the readings of the attached thermometer (T), 

 of the barometer (B), and the times at which they were 

 taken. The readings of the wet bulb thermometer are not 

 given here. 



