THE AMEBIC. 



3.4255±.3335 -f. 3750 — .4529 



1.4276±.1390 —.1825^.1715 



.5982^.0582 -f .0238±.0768 



.0230±.0022 — .0034±.0027 



.0199±.0019 I +.00.3±.0026 



.0370±.0036 j — .0O15±.O046 



.0123^.0012 i +.0194 -.0016 



satisfactory manner the conclusion, " that when nature selects, 

 through the agency of winter storms of this particular kind of 

 severity, those sparrows which are short stand a better chance of 

 surviving. ' ' For weight the results for the three series are also 

 consistent in sign, and even when taken individually indicate 



