is 



RECORD A N I> UK DUCT I ON 



Table II. Diubnal Variation of the Temperature of the Air in* Shade. 



filiation of the preceding mean hourly yalm i i b month, and of their monthly mean temperature. 



Lai 

 . Month 





1857 



18 





IS 



July 



Dec. 



.Tan. 



March 

 April 



Jnne 



Nov. 

 Dec. 



Feb. 

 March 



April 

 Jnly 



62.0 

 74.0 



75.2 

 74.8 



73.2 



74.6 

 74.4 

 73.1 

 72.0 

 72.0 



72.0 

 72.0 

 72.0 



59.1 

 57.7 



60.1 



88.5 

 94.4 

 94.2 



94.2 

 94.2 



94.2 



94.2 

 94.2 



72.0 

 72.li 



71.9 



94.2 



40.9 



2* 



4" 



+17.15. 



J- 4.37- 



— 4.1'::. 



_22.oo;- 



—16.55 



— 5.43 

 4. 3.03 



11.53- 



36.64- 

 21.06 - 



44.78 

 33.16 



• 4.31 



4.58 



22.23 



16.18 



■ 6.03 



-34.52 



-24.25 

 . 7.52 

 11.20 

 32.41 

 34.26 

 36.32 

 21.00 



— 4. 38 

 4-33.33 



4-36.51 437.24 

 . . 4-34.85 

 . . 443.6O 



6" 



S" 



10» 



416.75 

 4 5.29 

 — 4.98 



—21.47 

 —24.92 



in. us 



5.60 



4 4.13 



—I11.60 



33.97 



—21.57 



439.24 



--45.24 

 --33.99 

 --18.78 

 -- 6.29 



— 4.98 

 —21.10! 

 —24.72 

 — 15.55 1 



- 3.4 I 



+ v - ;;1 

 4-29.69 

 4-35.92 

 +36.39 

 4-34.44 

 4-24.68 

 4 7.37 

 —10.33 

 —33.32 

 —33.97 

 —35.97 

 —19.45 



2.27 



41 6.50 

 4-38.05 



t 



20 

 6 



I 



21. 



24 



—15. 



— 1 



410 



Noon. 



.29 

 36.37 



445.70 



—10 

 —32 

 —33 

 —35 

 —14 



-4-46. 

 36. 



22. 

 7. 

 4. 

 21. 

 24, 

 11, 

 ■ 0, 

 12. 



--32, 

 37, 

 39, 

 35 



426 

 - 9, 

 10, 

 32, 

 33 



—35, 

 11, 



442.90 



4" 



6" 



423.16 

 4- 7.32 

 — 4.62 

 —21.48 

 —24.52 

 13.95 

 4 0.74 

 413.37 



46 

 39 



07 

 39 

 42 

 21 

 16 

 11 

 17 

 62 

 28 

 110 

 IS 

 40 

 4:. 

 03 



32 — II.07 

 si — :;2.74 

 31—33.55 

 25|—35.25 

 —12.03 



4 1.25 

 4-18.81 



4-39.82 



443.48 

 4-37.97 



417. 60 



442.34 



17. 

 36. 



. 6. 



4, 

 21. 

 25, 



11. 

 ■ 0. 

 .12, 

 32. 



■38. 



.35. 

 .26, 

 - 7, 

 11, 

 33, 

 33, 

 35, 

 13.77 



0.60 

 18.21 



36.92 



441.9s 

 437.65 

 ■4-47.30 



i 



420 



±1 



—21, 

 —24 

 —15, 

 — 2, 



+ 10 



—11, 

 —33, 

 —32, 

 —36. 



—IS. 



4-45. 

 •34. 

 16 419. 

 68 4 5. 

 82 



441.07 



—21 



—25, 

 —15. 



— 4, 



4- 1 

 30 



4-36 



--34 



— -25 



—12 

 —33 



—33 

 —36 

 —19, 



— 4.07 



414.20 

 4-33.93 



440.02 

 -1-37.10 

 4-45. 60 



10" 



418.63 

 4- 4.81 



■ 5.17 



21.86 



—25.08 



15.43 



— .5.57 

 4 6.14 



—12.23 

 —33.40 

 — 33.11 

 —35.96 

 —19.52 



438.5« 



Midn't. 



Mean. 



44.26 

 13.31 

 17.38, 



■ 4.31 



■ 6.07 

 22.24 

 25.0H 

 15.70 



• 6.01 



• 5.63 

 .27.73 

 .33.50 

 .34.74 

 .33.57 

 .24.73 

 . 6.53 

 12.57 

 33.29 



■36.59 

 20.66 



4-45.56 



419.54 

 5.71 



— 4.88 



—21.5 



—24.84 



L5.31 



— 3.31 

 4 8.04 



34.52 



--25.43 



-- 7.54 



1 L.29 



—32.97 



—3,6.0:; 



— 17.7' 



— 5.82 

 411.39 

 4-31.08 



436.98 

 4-35.52 



4-45.00 



X 



2.45 



15.42 



I 



40.13 

 36.58 



-15.su 



Discussion 0/ the Annual Variation and of the Temperature at Different Seasons 



of the Year. 



The monthly moans brought out in Table I refer to different localities and years, 

 and require to be combined with reference to these changes. The " Fox" remained 

 stationary at the winter quarters for nearly a whole year — between August, 1858, 

 and August, 1859 — and we will, therefore, first examine the annual variation, the 

 mean temperature of the seasons and of the whole year, for Port Kennedy, in north 

 latitude 72° 01', west longitude 94° 14', near the eastern entrance to Bellot Straits, 

 which separates North Somerset froom Boothia Felix. Our monthly means for 

 1st, 1S5S and 1859, require to be corrected for difference of position. For this 

 purpose, 1 have projected on a suitable chart the two isothermal lines for the month 

 of A.ugust, constructed by me on the basis of Dove's investigation, and published 

 in the 2d volume, Appendix No. XIII, of Dr. Kane's Narrative of "his Arctic Ex- 

 pedition (north of Smith Straits), in the years 1853-54-55. By means of these 

 curves, we find that the positions of August, 1858 (viz., latitude 73°. 1, longitude 

 88°.5), and of August, 1859 (viz., latitude 71°. 9, longitude 79°. 8), can be assumed 

 as lying nearly on the same isotherm, with a temperature of 1°.4 Fahr. relatively 

 collier than the isotherm passing through Port Kennedy in that month; the nor- 

 mal distance between the isotherms differing 4°.5 in temperature being nearly 6° 

 oi arc. In the following table, the temperature for the month of August is derived 

 from the mean of the respective observations of 1858 and 1859 increased by 1°.4, 

 111 order to refer the value to the locality of Port Kennedy. 



