DEPAKTMKNT OK LITIIOLOCY AND I'llYSlCAL (iEOLOdY. 243 



Bliowiiij^ ^lacijition, s;uid orosion, lipplc marks, and mud cracks, but 

 which need not be mentioned more in detail since they do not as yet 

 occupy their proper phices in the systematic exhibits. 



Otlier miscelhineous materials on exhibition are mentioned in the fol- 

 lowing list : Eight geological maps of the United States and foreign 

 countries; one large ma}) showing distribution of temperature in the 

 United States for the months of June, July, and August; one large 

 nuij) showing distribution of rain-fall for the same period; one large 

 map showing distribution of rain-fall for the months of December, Jan- 

 uary and February ; fifteen astronomical views comprising the Trou- 

 velot series of astronomical drawings; twenty-three photographs of 

 stone (piarries; eight colored i)hotograi)hs of stone buildings; tifteen 

 geological views, including the large plates from Dutton's atlas of the 

 Grand Canon of the Colorado of the West; seventeen, models, or re- 

 lief maps. These last are given in detail below: 



I. Yellowstone National Park. Scale, 1 inch ==1 mile; horizontal and 

 vertical the same. jVIodeled by E. E. Howell. Issued by Ward & 

 IJowell. Size, 1 feet 7A inches by 5 feet 5.1 inches. U. S. Geological 

 Survey. 



II. Elk Mountains of Colorado. Scale : horizontal, 1 inch=:l mile; 

 vertical, 1 in(!h=2,G-10 feet. Modeled by W. II. Holmes. Size, 2 feet 

 2 inches by 3 feet 8 inches. U. S. Geological Survey. 



III. Mount Vesuvius and Monte Somnui, Italy. C()mi)iled by Tiiomas 

 Dickert. Size, 2 feet 4^ inches by 2 feet 4A inches. Issued by Waul 

 cSi Howell. 



lY. Geological model of Switzerland. Size, 11 inches by 21 inches. 



V. The Washoe District, Nevada. Scale, 1 inch = 1,00(5 feet or 

 1:200U0; horizontal and vertical the same. Geology by G. F. Becker. 

 Blodeled by E. 10. Howell. Size, 2 feet 5A inches by 3 feet 3 inches. 

 Issued by Ward & Howell. U. S. Geological Survey. 



VI. Leadvillo, Colo., and vicinity. Scale, 1 inch=^800 feet, or 1 :DG()0. 

 Geology by S. F. f^mmons; modeled by E. E. Howell. Size, 2 feet 7A 

 inches. Issued by AVard »S: Howell. U. S. Geological Survey. 



VII. The same in se(;tions. U. S. (5eological Survey. 



VIII. Gulf of Mexico. Scale: vertical, 1 inch=^l,()()() fathoms; ratio of 

 vertical to horizontal, 0.03. Size, 23 by 32 inches. Issued by Coast 

 and Geodetic Survey. 



IX. The Yosemite V^dley, California. Scale, about 1 inches to \ mile. 

 Horizontal and vertical the same. Modeled by K. E. Howell from sur- 

 vey by Kir)g and Gardner. Size, 2 feet 5 inches by 1 feet one-half 

 inch. Issued by Ward & Howell. U. S. Geologic^al Survey. 



X. The San Juan Mountains and mining regions. Scale, 1 inch = l 

 mile, or 1:033G0; vertical scale three times the horizontal. Modeled by 

 T. W. Eglostein. Size, 4^ by 3.| inches. U. S. G(H)logical Survey, Capt. 

 George M. AVlieeler in charge. 



XI. The Grand Canon of the Colorado of the West and Clitfs of 



