PHYSICS OF THE GLOBE. 61 



vanced views of meteorology as a dynamical or physical 

 study. In this respect, possibly, the evidence of Professor 

 Airy is most interesting. He testifies that, in his opinion, 

 meteorology cannot be called a science, because as yet we 

 have scarcely taken a step from causes to effects; that, in 

 order to develop the science proper, there are needed more 

 observations from more numerous stations throughout the 

 world, by means of which to construct daily weather maps. 

 He also points out the necessity of studying the viscosity 

 of the air, the diffusion of vapor, the radiation of heat, and 

 other physical properties which require experimental inves- 

 tigations; that, in short, what we want is a theory to apply 

 to what we observe in the atmosphere. Had the Treasury 

 Committee called to their councils some other witnesses than 

 those they did, they could easily have been furnished with 

 those well-established theories that are now recognized 

 as the basis of the true deductive science. We have our- 

 selves for some years past urged the establishment among 

 our American colleges of special schools and physical labo- 

 ratories devoted to meteorology. These should, on the one 

 hand, train up the experts needed as advisers to large busi- 

 ness interests and in the Army Signal Office, and, on the 

 other, should contribute to the development of that deduct- 

 ive science concerning which so little seems to be known by 

 the witnesses who testified before the Treasury Committee, 

 but which is none the less recognized by most of those who 

 actually make the official weather predictions in Europe and 

 America. 



In accordance with these recommendations the London 

 Office is now somewhat differently organized, being directly 

 under the control of the Meteorological Committee, to which 

 Mr. Scott is now appointed as secretary. The report just 

 published for the previous sixteen months shows, however, 

 but little evidence of change. Its sphere of work is some- 

 what increased. 



In Mexico, under the Department of Public Works, a Me- 

 teorological Bureau has been established, and hourly obser- 

 vations are published in monthly sheets. Sefior Barcena 

 hopes that eventually weather reports and warnings will be 

 exchanged with the United States to the advantage of both 

 parties. 



