178 



RECORD AND RESULTS OP 



Day of 





IS (JO. 







1S61. 









the 

 month. 



















Sept. 



Oct. 



Nov. 



Dec. 



Jan'y 



Feb. 



March. 



April. 



May. 



June. 



July. 



1 



+ 23°. 4 



+ 16°.l 



+ 0°.7 



+ 9°.9 



—24°. 8 



— 21°.7 



— 21°.5 



— 17°.7 



+ 3°.3 



+ 21°.3 



+ 39°.l 



2 



22 1 



21.4 



—1.0 



+ 2.7 



—27.6 



—17.8 



—13.1 



—19.0 



2.9 



21.1 



37.3 



3 



23.9 



21.4 



—3.3 



—12.7 



—30.9 



—29.7 



—16.6 



—22.1 



8.9 



21.4 



41.8 



4 



21.2 



25.5 



—0.8 



—15.8 



—27.9 



—23.7 



—23.9 



—20,6 



13.5 



26.9 



38.6 



6 



24.8 



23.0 



—5.3 



—4.8 



—26.7 



—23.0 



—33.4 



-15.5 



14.6 



29.0 



41.8 



6 



28.7 



22.2 



—8.4 



—11.8 



—29.7 



—23.5 



—32.2 



—14.6 



23.2 



27.0 



41.2 



1 



25.9 



24.1 



—3.4 



—18.8 



—23.1 



—30.4 



—25.0 



—21.1 



22.5 



29.4 



43.6 



8 



24.4 



28.1 



+ 11.2 



—19.8 



—19.2 



—26.8 



—17.3 



—21.8 



27.9 



29.2 



39.8 



9 



25.9 



26.2 



+ 12.4 



—22.4 



—19.4 



—22.8 



—14.1 



—19.1 



29.3 



35.3 



42.7 



10 



26.4 



16.0 



+ 6.6 



—25.3 



—21.9 



—27.5 



—14.9 



—18.9 



32.0 



33.5 



40.8 



11 



30.5 



11.9 



+ 4.8 



—17.3 



—12.5 



—21.5 



—15.3 



—21.0 



30.0 



34.4 



39.3 



12 



26.8 



12.1 



+ 5.7 



—18.2 



—17.0 



—22.3 



—18.0 



—11.6 



33.6 



33.9 



47.9 



13 



25.6 



+ 6.5 



+ 4.7 



—14.5 



—18.3 



—33.4 



—26.0 



12.2 



35.8 



34.1 



38.8 



14 



24.0 



—1.4 



+ 5.9 



—19.9 



—9.8 



—31.5 



—28.7 



—13.0 



33.5 



36.0 



41.1 



15 



25.4 



—3.5 



—0.3 



—11.4 



—20.2 



—35.3 



—30.3 



—13.1 



33.2 



36.0 



41.8 



16 



30.6 



+ 1.9 



—2.7 



—19.8 



—28.4 



—34.3 



—31.4 



—11.2 



32.0 



33.7 



36.9 



lY 



24.6 



+ 2.7 



—2.5 



—4.1 



—24.8 



— 31.'1 



—28.2 



—5.8 



27.3 



35.0 



38.8 



18 



21.2 



+ 1.2 



—4.5 



—2.3 



—28.4 



27.2 



—24.6 



—3.6 



20.4 



35.6 



40.1 



19 



18.4 



—4.2 



—11.4 



—4.5 



—24.2 



—31.6 



—20.8 



—0.6 



16.9 



35.3 



39.4 



20 



19.T 



+ 4.8 



—15.8 



—8.7 



—33.5 



—18.1 



22.1 



+ 0.7 



16.8 



37.3 



39.6 



21 



23. T 



—1.3 



—9.2 



—17.6 



—30.1 



—14.8 



—28,2 



—3.3 



20.9 



40.0 



37.5 



22 



26.4 



+ 4.4 



0.0 



—20.6 



—31.3 



—20.1 



—30.8 



—5.6 



22.2 



41.2 



37.6 



23 



n.3 



—1.0 



+ 3.3 



+ 2.0 



—40.5 



—19.3 



—31.0 



—5.2 



20^9 



41.4 



35.8 



24 



20,0 



—4.7 



+ 1.1 



+ 1.5 



—30.3 



—20.6 



—34.3 



—2.7 



24.1 



39.7 



35.9 



25 



20.2 



—7.0 



+ 9.8 



—11.0 



—34.2 



—20.5 



—22.9 



.—9.8 



24.9 



39.3 



34.3 



26 



18.0 



—7.7 



+ 10.1 



—15,1 



—29.6 



—22.1 



—26.0 



—8.3 



30.6 



38.7 



40.9 



2t 



18.5 



—5.0 



+ 16.6 



—20.5 



—23.1 



—23.5 



—16.2 



—7.2 



32.2 



37.8 



42.2 



28 



19.4 



—3.0 



+ 25.6 



—15.2 



—24.9 



22.4 



— 6.8 



—7.2 



30.3 



37.6 



53.1 



29 



9.T 



—0.1 



H-20.0 



—15.3 



—27.4 





—12.5 



—2.3 



28.5 



37.2 



49.4 



30 



11.4 



+ 3.1 



+ 15.4 



—23.9 



—29.8 





—10.9 



+ 3.0 



24.4 



37.2 



43.2 



31 





+ 1.3 





—21.8 



—35.6 





—14.9 





20.2 





36.6 



Mean, 



+ 22.60 



+ 7.60 



+ 2.84 



—12.81 



—25.97 



—24.88 



22,32 



—11,01 



+ 23.77 



+ 33.85 



+ 40.54 



Annual Fluctuation of the Temperature of the Air. 



The annual fluctuation of the temperature at Port Foulke is represented by the 

 above monthly means and an interpolated value for the month of August. For the 

 purpose of comparison and interpolation the observed mean temperatures at Van 

 Rensselaer Harbor^ and at Port Kennedy^ are placed together with the correspond- 

 ing values at Port Foulke. The interpolated temperature for August is obtained 

 as foUows: August warmer than June at Van Rensselaer Harbor, 1°.70; at Port 

 Kennedy, 1°.84; mean, 1°.77; which, added to the observed temperature of June 

 at Port Foulke, gives 35°. 62 for the temperature of August. In the same manner 

 the comparison of the July and August temperature gives August colder than Jidy 

 4°. 77, hence temperature of August 35°. 77. Again, the comparisons with Septem- 

 ber give for the preceding month 37°. 55, giving to this last value the Aveight one- 

 half, and to the others the weight one each, the temperature for August becomes 

 36°.07, all expressed in degrees of Fahrenheit's scale. 



^ Middle of page 29 of discussion of Dr. E. K. Kane's Observations. 



" Second table of page 20 of discussion of Sir F. L. M'Clintocls's Observations. 



