FUTURE SCOPE AND ARRANGEMENT OF EXHIBITIONS 
Briefly, these various objects may be summarized as follows: 
1. Closer relations with the system of Public Education. 
2. Extension of the exhibition system to pure science, as- 
tronomy, physics, geography, physical geography, ocean- 
ography. 
3. Applications of science to public health, economic forestry, 
economic zoology, mines and mining. 
In the new Department of Public Health, for example, we should The Depart- 
pursue the fine beginning which has been made and show the relation pmic 
of the simpler forms of animal and plant life to germ and protozoan 
diseases along the lines begun in the mosquito exhibit. 
In the Department of Woods and Forestry, we should display Conservation, 
the principles of conservation and teach the lessons of economy rather 
than of waste in the natural resources of our country. 
In the pure sciences, astronomy has never found its way into any 
natural history museum until the present admirable beginning made 
in this institution, to the instruction and delight of thousands of visi- 
tors. It is obvious from the laws of the unity of nature, taught by Astronomy. 
Humboldt and Darwin, that all causes are ultimately astronomic and 
physical. Certain temporary exhibits of solar, lunar and stellar 
photographs from the Yerkes and other observatories have proved both 
fascinating and instructive to the public. We already have the 
promise of the superb photographs which are now being secured by 
Professor Hale of the Carnegie Institution at Pasadena. These 
display the evolution of worlds, the corona of the sun, the vortical 
nature of the sun spots. Other astronomers in our observatories, 
which now lead the world, will be glad to send us their latest negatives. 
Displayed in a darkened room, with transmitted light, these negatives 
give a perfect vision of the heavens as they appear through our largest 
telescopes. Such an exhibition could be arranged at comparatively 
small expense on the first floor of the new Rotunda. 
Similarly, in Physical Geography, we are promised the hearty physical 
co-operation of Professor Davis of Harvard University, the leading Geography. 
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