ON TIM'. I.ONGHTDK nl' U \s|[|\i. r<>\. 



2"! 9 



Forty-one corresponding observations oftlic second limb, the mean resulting correction 

 from which, by weight, is 



— :> .38. 



One hundred .and one corresponding observations of botli limbs, giving a mean correc- 

 tion, bv weight, of 



— 3' .59. 



WASHINGTON AND CAMBRIDGE (ENGLAND.) 



3/oon's first limb. 



