402 



SCIENCE. 



[N. S. Vol. I. No. 15. 



most unsuspected element, what other sur- 

 prises may hide in equally common things ? 

 The twitching of a dead frog's leg a hun- 

 dred years ago started a train of discoveries 

 in electricity that have revolutionized the 

 world. But Galvani was not the first anato- 

 mist who used the frog as illustrative ma- 

 terial. Science knows no ultimate limits be- 

 yond which she may not go. The mountains 

 of Colorado are not yet exhausted of their 

 precious metals, nor has nature yet thrown 

 up her hands as a signal that she no longer 

 resists the uncovering of all her treasure. 



I bear to you the congratulations of the 

 Mother of State Universities, and the wish 

 that this institution may be an intellectual 

 light attracting the youths of Colorado, and 

 a glory to this great Commonwealth. 



Henry S. Cabhaet. 



TjNrVEBSITY OF MICHIGAN. 



TSE GROWTH OF FIEST-BOEN CHILDREN. 



During the year 1892 I made arrange- 

 ments for a series of measurements of school 

 children, one of the objects of which was 

 the determination of any existing difference 

 between the growth of first-born and later- 

 born children. The measurements were 

 taken in Toronto, under the direction of Dr. 

 A. F. Chamberlain, and in Oakland, Cal., 

 through the kindness of Professor Earl 

 Barnes. The following table contains the 

 results of the observations taken in Oak- 

 land. 



The columns named ' Differences ' gives 

 the amount to be added to the average stat- 

 ure and weight in order to obtain the stat- 

 ures and weights of first-born and later- 

 born children. The figures printed in pa- 

 renthesis designate the numbers of individ- 

 uals measured. 



