SOUTHERN CALIFORNIA ACADEMY OF SCIENCES iii 



west along Chase Creek for twelve miles. The River Frisco, 

 with its tributaries, traverses the district, as it flows southwards 

 to join the Gila about twelve miles below Clifton. 



LIST OF PLANTS. 



Anemone sphenophylla Poepp. Clifton. Longfellow. 

 April. 



Aquilegia chrysantha Gray. Moist banks Chase Creek and 

 Blue River. May. 



Thalictrum Fendleri Eng. var. Wrightii Trealease. Met- 

 calf. July. 



Clematis Drummondii T. & G. Fairly common. Septem- 

 ber. 



R. cjnnbalaria Pursh. Gila River at Guthrie. May. 



Myosorus minimus L. River at Clifton. May. 



Eschscholtzia Mexicana Greene. Common. May. 



Corydalis aurea Willd. var. occidentalis Eng. Frequent 

 along shaded river banks. 



Wislizenia refracta Eng. On the Gila banks at Sheldon. 

 October. 



Cleome integrifolia T. & G. Locally abundant in sandy 

 soils. May. 



Polanisia trachysperma T. & G. Widely distributed May 

 to October. 



ASTRONOMICAL NOTES. 



EDITED BY WM. H. KNIGHT. 



The new instrument which is being installed on Mount Wilson by 

 Director Hale of the Yerkes Observatory, will be known as the Snow 

 Memorial Telescope, and is Dhe largest of the kind in the world. This is 

 made possible by the liberal contribution of Miss Snow in connection 

 with an appropriation of $13,000 from the Carnegie research fund. In 

 connection with this great instrument there will be spectographs, spec- 

 troheliographs, and the finest astronomical apparatus possible to obtain. 

 It is expected that it will be ready for research work in December of 

 this year, and will be used in observing the phenomena of sunspots and 

 solar disturbances during the maximum sunspot year of 1905. 



Regarding the possibilities of this research work Professor Hale 

 says: "The solar observer may be the spectator of physical and chem- 

 eial experiments on a scale far transcending any 'that can ever be per- 

 formed in a laboratory. In this enormous crucible, (the sun), heated to 

 temperatures greatly exceeding those attainable by artificial means, im- 

 mense masses of luminous vapor, including most of the elements known 

 on earth and many not yet discovered here, may be seen undergoing 

 changes and transformations well calculated to assist in the explanation 

 of problems which the .laboratory cannot solve. ' ' 



An important astronomical event is the return of Encke's comet 

 under favorable conditions for observation, similar to those of 1805, 1838, 

 and 1871. It will be at perihelion January 4, 1905. Its nearest approach 

 to the earth will be about 35,000,000 miles, when, early in December, it 



