190 



RECORD AND RESULTS OP 



Observations of the Direct Heating Poioer of the Sun, 



For the measure of the direct heating effect of the sun, two black bulb thermome- 

 ters were exposed on the floe near the ship. 









B. B. thermometers, Nos. 1648 and 1704. 

 Temperature in sun, at Port Foulke. 





1648. 



1704. 





1861. 



Peb'y 26th 



—170.5 



—150.5 



at 2 J P. M. 





" 27th 



—18.0 



—17.5 



" " 





" 28th 



—15.5 



—13.5 



" " 





March 4th 



—16 





at 2^ P. M., —ISO at 3 P. M. 





6th 



—22 



—21 



at 2 P. M., —230.5 and —21° at 3 P. M. 





Yth 



—19 



—18 



at 3 P. M. 





8th 



—11.5 



—10 



at 8 P. M., —12° and —10° at 4 P. M. 





9th 



—7 



—5 



at 3 P. M., —9.5 and — 80 at 4 P. M. 





" 11th 



—9 



—4 



" 





" 12th 



—12 



—11 



at 3 P.M., —12.5 and— 12.5 at 5 P.M. 





" 13th 



—16 



—14 



at 5 P. M. 





" 14th 



22 



—20.5 



at 3 P. M., —22 and —20.5 at 5 P. M 





" 15th 



22 



—18 



at 5 P. M. 





16th 





2 



at 3 P. M., and — 30 at 5 P. M. 





" 17th 





+ 1 



" 





" 22d 





+ 1 



at 3 P. M., and— 7.5 at 5 P.M. 





" 23d 





+ 1 



at 1 P. M., +30 at 3 P. M., + 2o at 5 P. M. 





" 24th 





+ 1 



at 1 P. M., —4 at 3 P. M., —8 at 5 P. M. 





" 26th 





—9.5 



at 1 P. M., —12.5 at 3 P. M., —8 at 5 P. M. 





" 29th 





+ 6 



at 1 P. M., +6 at 3 P. M., —1.5 at 5 P. M. 





" 30th 





—5 



at 1 P.M., —2.5 at 3 P.M. 





" 31st 





+ 14 



at 1 P. M., +4 at 3 P.M. 





April 1st 





+ 8 



at 1 P.M., +8 at 3 P.M. 





3d 





—10 



at 1 P. M., —5 at 3 P. M., O^ at 5 P. M. 





4th 





+21 



at 3 P.M., —5 at 7 P.M. 





8th 





—11 



at 1 P. M., —13 at 3 P. M. 





9th 





—12 



at 1 P. M., —5 at 5 P. M. 





" 12th 





+ 14 



at 5 P. M. 





13th 





—7 



at 3 P. M. 





14th 





—6 



at 1 P. M., —9 at 3 P. M. 





" 15th 





+ 1 



at 3 P. M. 





" 16th 





+ 3 



at 11 A. M. 





" 17th 





—5 



at 11 A. M. 





" 18th 





+ 13 



at 11 A. M., + 18 at 1 P. M. Snow melting on side of ship. 





" 20th 





+ 10 



at 11 A.M., +23 at 1 P. M. 

 + 19 at 3 P. M. 

 + 13 at 5 P.M. 





" 22d 





+ 17 



at 1 P. M., +13 at 3 P. M., +9 at 5 P. M. 





" 23d 





+ 2 



at 9 A.M., +21 at 11A.M., +18 at 1P.M., +5 at 3 P.M. 





" 26th 





+ 12 



at 9 A.M., +28 " +15 at 5 " 





" 27th 





+ 6.5 



at 1 P. M., +5 at 3 P. M., +4 at 5 P. M., at 7 P. M. 





" 28th 





+ 5 



at 11 A. M., +8 at 1 P. M., +5.5 at 3 P. M. 





" 29th 





+ 10 



at 3 P. M. 





" 30th 





+ 13 



at 11 A. M., +17 at 1 P. M., +18 at 3 P. M. 





May 1st 





+ 15 



at 9 A.M., 11 A.M., 1 P.M., 3 P.M., 5 P.M., + 13.5 at 7 P.M. 





2d 





+ 8 



at 11 A. M., 5 P. M., + 13 at 7 P. M. 





3d 





+ 25 



at 11 A. M., +24 at 1 P. M., +22 at 3 P. M. 





5th 





+ 20 



at 9 A.M., +29 at 11 A. M., +24 at 1 P.M., 3 P.M. 1 

 + 25 at 5 P. M. 





Gth 





+ 35 



at 1 P. M., 3 P. M., +35.5 at 5 P. M., +31 at 7 P. M. 1 





7 th 





+ 30 



at 11 A. M., +34 at 1 P. M., +32 at 3 P. M. | 



The above observations ^vere made in clear Aveather. 



