148 PHILOSOPHICAL SOCIETY OF WASHINGTON. 
Target of pistol shots at 50 yards range: ¢ = 0.167 ft.; 50 shots, 
NO Misses. 
| No. of shots on | No. of shots on 
circle. ring. 
Radii. ||- Diserep'y:"|—--_, | Dares: 
Theory. | Actual. Theory. | Actual. 
5 | i es 
22. i 
0.5 1.5 I +0.5 1.5 I +0.5 
1.0 5.9 8 —2.1 4.4 7 —2.6 
el 12.2 14 18 6.3 6 +0.3 
2.0 19.7 23 —3.3 72 9 —I.5 
2.5 27.0 28 —1I.0 ise} 5 +2.3 
3-0 Nn 3a 33 +0.7 6.7 5 +17 
3-5 || 39-6 37 +2.6 5-9 4 +1.9 
4.0 43-2 41 2.2 3.6 4 —0.4 : 
4.5 46.0 46 0.0 2.8 5 —2.2 
5.0 47.8 47 +08 | 1.8 I +08 | 
5.5 48.8 49 —0,2 1.0 2 —1.0 
6.0 49.4 50 —o.6 0.6 I —0.4 
49-4 50 
Mr. ELiiorr gave an example of remarkably close agreement 
between the distribution of errors by theory and by observation of the 
chest measurements of 1,516 United States soldiers, reported by Dr. 
Bulkley at the Berlin Statistical Congress. In five groups the 
greatest difference was four-tenths per cent. 
