REPORT ON GEOPHYSICAL LABORATORY 



193 



most desirable space for placing cases in which to store apparatus 

 and supplies. 



In my opinion, the offices of a laboratory which are to be fre- 

 quented by outsiders should be partially isolated from the main 

 building, as indicated in the following rough diagram, so that doors 

 leading into the main building should be opened only when this is 

 unavoidable. 



Number of Stories. — Three stories seem necessary and sufficient for 

 a laboratory. The lowest, or basement, story should be on the 

 ground, with one or two deep subterranean chambers beneath for 

 secular experiments. The second story should be on arches above 

 the basement, and would afford excellent working rooms with piers 

 of fair stability. A third story would serve to protect the second 

 and can be usefully employed for photographic work and experi- 

 ments not dependent upon piers. 



Estimates of Expense. — Estimates of the expense of building a labo- 

 ratory were given in the project submitted by me to the Institution 

 nearly a year since. These were based on the cost of the laboratory 

 of the Reichsanstalt, and were set down at $250,000. I know of no 

 way to improve upon this result except by having an architect draw 



