372 



PROCEEDINGS OF THE AMERICAN ACADEMY 



COMPARISON OF METERS T\ T'l, Ri\ 



R,\ 



AND YARDS R 



Rj^i. 



Date. 



1883. 

 March 22 .. 

 " 23 . . 

 " 25 .. 



April 



May 



26 . 



28 . 

 20 . 

 30 . 

 30 . 



1 . 



2 , 



3 . 



8 . 



9 . 

 10 , 



1-1 . 

 15 

 16 

 17 



18 



19 



20 

 21 



22 

 23 



" 24 . 



" 25 . 



" 27 



" 28 '. 



" 20 . 



" 30 . 



« 31 . 



June 1 . 



3 . 



" 4 , 



" 5 , 



" 6 . 



7 



" 25 



" 26 



" 26 



" 27 



" 27 



" 27 



" 28 



rei 



, c 



1 1 



o 



— 1.93 



— 1.30 



— 0.25 

 + 2.27 

 + 0.92 



+ 6.40 



+ 1.05 



— 0.38 

 + 1.25 

 + 0.07 



— 14 

 + 4.51 

 +12.58 

 -f 10.34 

 + 6.98 



+14.68 

 +14.58 

 +15.02 

 +14.75 

 +14.46 



+14.54 

 +14.43 

 +14.66 



+14.84 

 +14.58 



+14-40 

 +14.27 

 +14.41 

 +14.64 

 +14.76 



+14.79 

 +14.80 

 +14.99 



+19.18 

 +17.59 



+17.07 

 +17.07 

 +17.23 

 +17.86 

 +17.89 



+18.04 



+17 87 

 +17.07 

 +18.16 

 +18 03 



Mar. 22 to Mar. 26 

 Mar. 28 to Apr 1 

 Apr. 2 to Apr. 10 

 May 14 to Blav 18 

 May 19 to May 23 



May 24 to Mav 29 

 May 30 to June 4 

 June 5 to June 26 

 June 26 to June 28 



Means . . 



Aa 



diy. 

 —13.8 

 —13 6 

 —15.8 

 —15.5 

 —14.1 



-13.1 

 ^15.4 

 —15.2 

 —13 3 

 —15.6 



—14 9 

 —14 8 

 —13 8 

 —14.1 

 —12 6 



-13.6 

 —16.6 

 —14.3 

 -17.3 

 —15.9 



-15 

 —16 3 



-16.4 

 —16.6 

 -16.8 



—17.1 



—15.2 

 —18.4 



—17.: 



—18.0 



—16.7 

 -16 7 

 -16.7 

 -16.0 

 -1C.2 



-15.0 

 -16.1 

 -173 

 -17.0 

 -16 5 



-151 

 -13.0 

 -14 6 



-16.6 

 -18.0 



-14 56 

 -14.52 

 -14.04 

 -15 44 

 -16.22 



-17.25 

 -16 46 

 -16.38 

 -15.64 



Aa 



div. 

 +18 

 +2.0 

 —02 

 +U.1 

 +1.5 



+2.5 

 +0.2 

 +0.4 

 +2.3 

 0.0 



+0.7 

 +0.8 

 +1.8 

 +1.5 

 +3.0 



+2.0 

 —1.0 



±u 



—0.3 



+0.6 

 -0.7 

 —0.8 

 —1.0 

 —1.2 



—1.5 

 +0.4 

 —2.8 

 —2.1 

 —2.4 



-1.1 

 —11 

 —1.1 



—0.4 

 —0.6 



+0.6 

 —0.5 

 —1.7 

 —14 



-0.9 



+0.5 

 +1.7 

 +1.0 

 —1.0 

 —2.4 



+1.05 



+1.00 



+15- 



+0.1 



—0.61 



—1.64 

 —0.85 

 -0 77 

 —0.03 



+0.8 

 +0.9 

 -0.1 

 +0.0 

 +0.7 



+1.1 



+0.1 

 +0 2 

 +1.0 

 +0.0 



+0.3 

 +0.4 

 +0.8 

 +0.7 

 +1.3 



+0.9 

 —0.4 

 +0 6 

 —0.7 

 -0.1 



+0.3 

 —03 

 —0.4 

 -0.4 

 —0.5 



-0.7 

 +0.3 

 —1.2 

 —0.9 

 -1.1 



—0.5 

 —0.5 

 -0.5 

 —0.2 

 —0.3 



+0 3 

 -0.2 

 —0.7 

 —0.6 

 —0.4 



+0.2 

 +0.7 

 +0.4 

 —0.4 

 —1.1 



div. 



+0.46 

 +0.48 

 +0.51 

 +0.0" 

 -0.2' 



-0.72 

 -0 37 

 —0.35 

 —0.01 



Aft 



div 



Aa 



-15.61 : 



-6.87 m 



-9.8 



-7.2 

 -5.8 

 -8 4 

 -6.7 



-8.0 



-7.8 

 -9.7 

 -8.9 

 -8.7 



-8.0 

 -8.2 

 -7.7 

 -8.4 

 -7.3 



-8.9 

 -8.7 

 -9.7 

 -6.7 

 -7.6 



-6.3 



-8.7 

 -6.5 

 -7.7 

 -9.5 



-7.1 

 -6.7 



-8 4 

 -9 9 



-7.0 



-7.58 

 -8.62 



-7,92 

 -8 32 

 -7.74 

 -8.00 



—18 



+0.8 

 +2.2 

 —04 

 +1.3 



0.0 

 +0.2 

 —17 

 —09 

 -0.7 



00 

 -0.2 

 +0.3 

 -0.4 



+0.7 



—09 

 -0.7 

 -1.7 

 +1.3 

 +0.4 



+1.7 

 —0.7 

 +1.5 

 +0 3 

 —1.5 



+0.9 

 +13 

 —0.4 

 —1.9 

 +0.1 



+0.45 

 -0.59 



+0.11 

 —0.29 

 +0.29 

 +0.03 





Aa 



div. div. 



-0.8 

 +0.3 

 +1.0 

 —0.2 

 +0.6 



+0.0 

 +01 

 -0.7 

 —0.4 

 —0.3 



+0.0 

 —0.1 

 +0.1 

 -0 2 

 +0.3 



—04 

 —0.3 

 —0.7 



+0.6 

 +0.2 



—0.7 

 -0.3 

 +0.7 

 +0.1 

 -0.7 



+0.4 

 +0.6 

 -0.2 

 -0.8 

 +0.0 



+0.20 

 -0.26 



+0.05 

 -0.13 

 +0.13 

 -H).01 



-8.03 = -3.53 ^i 



+0 1 

 -2.0 

 —1.1 

 -1.1 



+0.6 

 —2.1 

 —16 

 —1.2 



—2.2 



—1.0 

 —1.4 

 —1.2 

 -2.2 



-2 7 



—2.3 

 —0.6 

 —2.9 

 -3.5 

 —1.7 



-1.5 

 0.0 



—0.2 

 00 



—1.0 



-2.0 

 —2.0 

 —31 

 +1.0 

 +2.1 



-1.02 

 -130 



-1.70 

 -2.20 

 -0.54 

 -0.80 



Aa 



+1.4 

 —07 

 +0.2 

 +0.2 



+1.9 

 -0.8 

 -0.3 

 +0.1 

 -0.9 



+0.3 

 -0.1 

 +0.1 

 —0.0 

 —1.4 



-1.0 

 +0.7 

 —1.6 



2 2 



—0.4 



—0.2 

 +1.3 

 +11 



+1.3 

 +0.3 



-0.7 



—0.7 

 -1.8 

 +2.3 

 +3.4 



+0.24 

 —0.04 



—0.44 

 -0.94 

 +0 72 

 +0,46 



+0.6 

 —03 

 +0.1 



-^o.l 



+0.8 

 —0.4 

 -0.1 

 +0.0 

 —0.4 



+0.1 

 +0.0 

 +0.1 

 —04 

 -0 



-0.4 

 +0.3 

 -0.7 

 —1.0 

 -0.2 



-0.1 

 +0 6 

 +0.5 

 +0.6 

 +0.1 



-0.3 

 -0.3 

 -0.8 

 +10 

 +1.5 



+0.11 

 —0.01 



—0.10 

 —0.41 

 +0 32 

 +0.20 



—1.26=— 0.55 la 



