246 B. A. Gould — Address delivered before 



Diameter of Lake, 





N.-S., 







850 feet, 



cc a cc 





E. - W., 







830 " 



cc cc u 





Greatest, 







860 " 



cc cc a 





Least, 







800 " 



Area of Lake, Aug., 



1892, 



12- 1 - 2 - 



acres. 







" " Halema'uma'u, 



100^ 



cc 







cc cc a 





153 



a 



in 



1886. 



Elevations, Aug., 1892. 



Halema'uma'u, North, —262 feet, ^highest point of cone. 

 " East, -278 " 



S. W., -283 " 

 N.W., —300 " 

 Lowest point in pit, — 565 " at foot of slope. 

 Depth of pit, 265 " from Hal., N. W T . 



Rim of Lake —519 feet. 



Surface of lava in Lake, —522 " 



Aet. XXX. — Address delivered before the American Metro- 

 logical Society, Dec. 30, 1892, by the President, Dr. B. A. 

 Gould. 



The year just elapsed has, like its immediate predecessors, 

 borne witness to the steady growth, in public opinion, of the 

 reforms for which the American Metrological Society was 

 established and to which it has earnestly devoted itself, so far 

 as the resources at its disposal and the earnest efforts of some 

 of its members have permitted. The hoped-for action of 

 Congress in making the employment of the metric system 

 imperative in the United States Custom-houses, as recom- 

 mended by the late Secretary of State and urged by a very 

 large number of petitions from various parts of the country, 

 has not been successful, although the interest of many mem- 

 bers of Congress appears to have been enlisted, and earnest 

 correspondence with some has been carried on. The confi- 

 dent expectation that a committee at Washington might be 

 influential in keeping the subject constantly before the minds 

 of our legislators has likewise not been fulfilled ; owing possi- 

 bly in part to the many exciting matters ot political discussion, 

 which have been exceptionally prominent. 



But the careful observer cannot fail to notice the increase in 

 knowledge of the metric system among our people, and the 



