MOUNT TAMALPAIS. 69 



Hitherto research, has been sporadic, individual, unorganized; but 

 fruitful beyond all anticipation. In the future it should become 

 more systematic, better organized, richer in facilities. Through 

 laboratories equipped for research alone the twentieth century must 

 work, and chemistry is entitled to its fair share of the coming op- 

 portunities. The achievements of the chemist, great as they have 

 been during this century, are but a beginning; the larger possi- 

 bilities are ahead. The greatest laws are yet undiscovered; the 

 invitation of the unknown was never mora distinct than now. 



MOUNT TAMALPAIS. 



By MARS DEN M ANSON, C. E., Ph. D. 



MOUNT TAMALPAIS is the southern and terminating peak 

 of the westerly ridge of the Coast Range, which confronts 

 the Pacific Ocean from the Golden Gate to the Oregon line. 



Its outliers form the bold headlands which skirt the Golden 

 Gate and adjacent waters to the north, and which bound the penin- 

 sula constituting Marin County. The spurs extending to the east 

 reach the shores of the Bay of San Francisco, and inclose small 

 alluvial valleys of great fertility and beauty. In some instances 

 these valley lands are fringed by tidal marshes, in part reclaimed 

 and under cultivation. 



The top of the mountain breaks into three distinct peaks, each 

 reaching an altitude of nearly half a mile above sea level, although 

 bounded on three sides by tidal waters. 



No land points visible from the summit, except those bounding 

 the apparent horizon, reach equal or greater altitude. The moun- 

 tain is therefore a marked feature from all parts of the area visible 

 from its summit, which area has an extent of about eight thousand 

 square miles. 



The adjoined photographic reproduction of a portion of a relief 

 map of the State gives a general idea of the adjacent land, bay, 

 and ocean areas. 



.The westerly group of islands, opposite the Golden Gate, are 

 the Farallones. The bold headland northwest of the Gate is Point 

 Reyes; it protects from the north and northwest winds the anchor- 

 age known as Drake's Bay. The strip of water between the adjoin- 

 ing peninsula and the mainland is Tomales Bay. 



The most westerly headland south of the Golden Gate is San 

 Pedro Point, and the prominent headland farther south is Pesca- 

 dero Point. The whole of San Francisco Bay is visible from Mount 



