48 



PHILOSOPHICAL TRANSACTIONS. 



[anno 1776. 



XX. Extract of a Register of the Barometer, Thermometer, and Rain, at 

 Lyndon, rn Rutland, 1775. By Thomas Barker, Esq. p, 370. 



Barometer. Thermometer. | Rain. 



Morn. 

 Aftem 

 Mom. 

 Aftem 

 Mom. 



■ Aftem. 



Morn. 



Aftem. 



Morn 



Aftem. 



T „ Morn. 

 June , i- 



Aftern. 



July fc?™- 

 ' Aftern. 



Mom. 



■ Aftem . 

 Morn. 



' Aftern. 

 Morn. 

 Aftern. 

 Morn. 



■ Aftern. 

 Morn. 

 Aftern. 



Jan. 

 Feb. 

 Mar. 

 Apr. 



May 



Aug 

 Sept, 

 Oct. 

 Nov, 

 Dec. 



Highest. I Lowest. I Mean. 



'-'9.91 

 29.91 

 30.09 



29.94. 

 29.87 

 C9.7 1 

 29.60 



C9.S0 

 29.96 

 30.06 



':8.72 

 28.35 

 '28.61 

 29.05 

 29.31 

 29.17 

 29.16 

 28.98 

 29.02 

 28.50 

 28.50 

 2S.15 



Mean of all 



29.33 

 29.24. 

 29.32 

 29.60 

 29.67 

 29.49 

 29.4-1 

 29.37 

 29.31 

 29.38 

 29.34. 

 29.54 



29.42 



In the House. Abroad. 

 High. Low. iMean.'High. Low. Mean 



47 



4-8 



48 



49 



48 



49J 



646 



67 



62 



64- 



661 



68 



G61 



65 



66 



64i 



65 J 



591 



59J 



48 



50 



51 



5U 



30 

 31 



392 



41 



38 



395 



40 1 



421 



49^ 



bOl 



58 



59 



58^ 



60 



58j 



60 



55i 



56| 



43^ 



45' 



39 



39 



356 



551 



40 1 



41| 



44 



4.5 



4.4. 



45 



49 



51 



551 



57' 



62 



64 



6.i 



646 



62' 



63 



60 



61 



511 



526 



42I 



43 



42 



42 



514 



50 



521 



49 



511 



466 



54. 



55 



80 



58| 



73 



62 



78 



6.i 



78 



61 



72 

 60 

 71 



6:, 



52 

 56 

 52 



556 



20 



26 



S\h 



36' 



28 



34 



36 



47 



■i6 



53 



50 



59 



52 



586 



486 



53' 



456 



53' 



30 



i9 



26| 



3+ 



24| 



32 



361 



41 



39 



16 



361 



46J 



4-4 



556 



49 



61 



56 



696 



58 



70 



54| 



65 



526 



63* 



43 



52 



36 



41| 



35 



40 



1.973 



2.522 

 1.728 

 1.035 

 0.900 

 0.887 

 4.078 

 4.760 

 5.670 

 3.480 

 3.570 

 1.096 



31.699 



In 4 years, 1740, 41, A'l, and 43, there came btit 66.36 1 inches of" rain. 

 In the last 4 years, 1772, 73, 74, and 73, there was 124.957 inches, which is 

 nearly twice as much. . ,■. ■ ,,j ,, 



XXI. An Experiment of parting Fresh Water from Salt by Freezing. By the 



safne. p. 373. 



In the severe frost last January, some salt water, being set abroad, froze into 

 an ice, which was not solid but porous, the hollows being filled with the saltest 

 part of the water, for the ice, when drained, was quite fresh. The salt water, 

 being again set abroad, froze as before ; what remained still unfrozen was now 

 become exceedingly salt, but the ice, drained and dissolved, was little if at all 

 brackish. This agrees with what Captain Cook mentions in his late voyage, 

 that in 6l° 35' south latitude they filled their water casks with fresh water, 

 melted out of ice found floating in tlie sea. By this experiment, if another 

 time more fully repeated, it may be found to what degree the saltncss of water 

 may be increased, by continuing to freeze away the iresh water. May not the 



