1880.] 



Mmj 24>th, 1879. 



J. F. Tennant — On Sf/indnrd Weights. 

 Type Comparison I. 

 Comparisons of EI with O^. 



67 



Oertling, No. 1. 



Weiglit 

 on left side. 



Weight 

 on rigbt side. 



EI 



EI + P.,„ 

 Do. 



EI + P.O. 

 EI 



Do. 



EH- 1-2 1 

 Do. 

 Do. 

 Do. 



0. + 1-2|- 



Do. 



Scale 

 Readings. 



Low. 



5- 7 



6- 1 



13-6 

 13-7 



131 

 134 



3 4 

 3-8 



High. 



95 

 92 



180 

 17-8 



174 

 17-2 



3 4 

 3-8 



10 7 

 10-3 



Deduced 

 Mean. 



7-54 



15-81 



Remabks. 



15 21 

 6.95 



13.3 

 13-6 



12- 8 



13- 3 



100 

 9-6 



16 6 

 16-3 



6-60 

 15 03 



h. m. 



Commenced at 6'4S a. m. 



in. o 

 A. Bar. 29 G0. Temp. 85 F. 



Dry Bulb 85°9. Wet Bulb 8 TO. 



3 

 36 



18-9 

 18-5 



11.9 

 11 4 



15-99 

 7-61 



Bar. 29 61. Temp. 86 F. 



Dry Bulb. 85°4 Wet Bulb fe0°L 

 h. m. 



Ended at 7-33 A. m. 



Hence EI =0=0, + 1-2 - P.„, ^ 0, + 1-2 - 0-297 P.^,. 

 EI^0,-l-2^^ + |2.^p,^^^o,-l-2l^^ + 0369 P.O.. 

 EI ^0,-1-2^^ +li.p.^^ ^0,-1-2-^ + 0404 P.„,. 



10 



7? 2-^9 



EI^O, + 1.2-^-^P.„,^0, + 1.2^="- 0-285 P.„,, 

 4 EI s 4 0, + 0-191 P.o, : or EI = 0, + 0-017.75 P.^^. 



Nolo. — In the original the succession of observations has been dislingui.shcd, ljut 

 want of space rendered it necessary to give this up. 



