LIST OF ILLUSTRATIONS. 



Facing page 



Plate i. Administration Building Frontispiece 



Plate 2. Ground Floor Plan, Administration Building 40 



Plate 3. First Floor Plan, Administration Building 40 



Plate 4. Second Floor Plan, Administration Building 40 



Plate 5. A, Acclimatization Laboratory, Carmel, California. 



B, Breeding Laboratory (adobe building), Tucson, Arizona 56 



Plate 6. Variability of Leptinotarsa multitceniata when transplanted from ances- 

 tral habitat at Chapultepec, D. F., Mexico, to Tucson, Arizona 66 



Plate 7. Fleet of the Marine Biological Laboratory, Tortugas, Florida 124 



Plate 8. A, Southern Observatory, from northwest, San Luis, Argentine Republic. 

 B, Transit Circle and Photometer Houses, northeast view. Southern 

 Observatory, San Luis, Argentine Republic 154 



Plate 9. Solar prominence, 85,000 miles high, photographed with the Snow Tele- 

 scope and s-foot spectroheliograph, August 21, 1909 162 



Plate 10. 60-inch Reflecting Telescope 168 



Plate ii. 150-foot Tower Telescope, showing construction 178 



Plate 12. The Carnegie 194 



Plate 13. View of deck of the Carnegie 197 



Plate 14. A, The Carnegie. 



B, View of the Carnegie at St. John's, Newfoundland, September 30, 1909, 



while the mists were rolling in 198 



Plate 15. Present front of Pirene; only Roman work visible 203 



Plate 16. Pirene sketch-plan 204 



VII 



