MOUNTAIN OBSERVATORIES IN AMERICA AND EUROPE. 15 



less perfect conditions, If one is searching for the site for a new 

 observatory, both conditions should be insisted upon ; if one is plan- 

 ning work at a station already established, the work should be chosen 

 so that it can be well done under existing; conditions. 



None of these and other obvious conclusions are new. The mass of 

 evidence will, however, bring new conviction even to those most familiar 

 with it ; and it may serve as a check on the wasteful expenditure of 

 public and private endowments. The subsidies to science, great as 

 they are, thanks to the generosity of governments and of individuals, 

 must be carefully husbanded if we are to exjDloit its entire domain, 

 which is enlarging day by day, one may say moment by moment. 



