IOO 



POPULAR SCIENCE MONTHLY 



vations have been compiled and studied, and the geophysical problems 

 are as yet only imperfectly formulated ; but of the physiographic 

 phenomena, or the disturbances of the earth's surface, so much is known 

 that it has been thought advisable to prepare a preliminary report. 

 This was submitted to the governor on the third of June, and has been 

 issued as a pamphlet of twenty pages. The expenses of the commission 

 are being met by the Carnegie Institution. 



Architects and engineers were not less prompt and energetic. To 



Fig. 2. Fault Topography between Tomales and Bolinas Bays; looking northwest. 

 The general slope toward the left has been interrupted by a slight uplift of the part at the left. 

 The pond occupies a hollow thus produced. 



the men who plan and direct construction in the earthquake district 

 of California it was important to know what materials and what struc- 

 tural forms best withstood the shock, and they immediately began the 

 study of earthquake injuries and of instances of immunity from earth- 

 quake effects. In that part of San Francisco where the earthquake 

 injury was most serious the shock was quickly followed by fire, which 

 destroyed much of the evidence, but many important observations were 

 made in the brief interval. The study of structural questions, like the 



