VIII LIST OF ILLUSTRATIONS. 



LIST OF ILLUSTRATIONS. 



Page 

 Pirate i. Spectroscopic Laboratory, MountWilson. Mount Wilson from Mount 



Harvard 60 



2. 60-inch Mirror Turned Down for Testing. Interior of Spectroscopic 



Laboratory, 68 



3. Pasadena Office and Erecting Building. Lower Part of Completed 



Road 84 



4. View across Cold Spring Valley looking Southeastward 96 



5. Near View of Part of the West Experimental Gardens. View of ' ' North 



Lot " 100 



6. Interior View in Main Building. Interior of Propagating House 104 



7. The Physalia at the Dock of the Tortugas Laboratory. View of the 



Main Laboratory Building from the North 108 



8. Reservation and Vicinity of the Desert Botanical Laboratory of Tucson, 



Arizona 120 



9. View of Desert Laboratory from West. Site of Austral Plantation on 



Cathedral Rock, Santa Catalina Mountains 124 



10. Area Denuded for the Purpose of Making Exact Observations on the 



Movements of Desert Plants in its Reoccupation. Ancient Beach 

 Line of Salton Sea 128 



11. Margin of Salton Sea near Travertine Point, May 22, 1906. . 128 



12. Stages in Stomatal Action ... 132 



13. View of Galilee, showing Special Observing Bridge and Instruments 



used in Observations. The Galilee at San Diego, California, Feb- 

 ruary 22, 1906 236 



