292 PROCEEDINGS OF THE CALIFORNIA 



Sequoia and its Historj, bj A. Gray, Pamph. 8vo. Am. Chem- 

 ist, Sept., 1872. 



Donations to the Museum : Tusk and lower jaw of Elephas pri- 

 migenius ; also, one side of lower jaw with teeth of some extinct 

 ruminant, from Elephant Point, Eschscholtz Bay, Kotzebue Sound, 

 from the Alaska Commercial Company — (the tusk weighs 155 

 pounds). Specimen of Qhimcera coUei, by J. P. Dameron. 



Description of a new Species of Hibiscus. 



BY A. KELLOGG, M. D. 



Hibiscus Californicus, Kellogg. — Stem 5 to 7 feet high, branching above 

 and stooling abundantly from a perennial crown, velvety stellate pubescent 

 throughout. Leaves cordate (rarely sub-3-lobed) acute, or somewhat acuminate, 

 serrate, ft to 7 nerved, petiole about ^ the leng-th of the blade (lamina 4 to 5 

 inches in length, and 3 to 4 in width). Peduncles axillary, 3 to 4 inches long, 

 articulated an inch or more below the flower, lower half confluent. Invoiuceis 

 about 12, sub-equal, persistent ; caly.x strongly nerved. Flowers light lemon 

 yellow, with purple centre and reddish nerves, about the size of common Holly- 

 hock. Capsule large, seeds many, minutely pappiilose-warty, chalaza loosely 

 appressed, dorsal line wanting. 



The above was collected by Mr. C. D. Gibbes, at Webb's Landing, on an 

 island in the San Joaquin River. 



The President introduced Prof. Bradley and Dr. Curtis, who 

 were attached to the Yellowstone Expedition, under Prof. Hayden. 

 Prof. Bradley had charge of the Snake River party, which investi- 

 gated that region, almost a terra incognita. The objective point 

 was the three Tetons, the trip to which Avas full of interest in the 

 discovery of hmestone and Trilobites, of the Quebec group, at Fort 

 Hall. At the edge of the Snake River Valley, the basalt com- 

 mences ; in this region were found extinct craters, the lava from 

 which contained numerous crystals of quartzite. To the north of 

 this are some domes of singular appearance, called the Sand Hill 

 Mountains. In the Teton basin is some fine agricultural land, 

 adapted for Avheat, etc., though the area is not large. Two of the 

 party ascended the Big Teton, 13,400 feet, by aneroid barometer, 

 to summit. The formation of the country indicates that the valley 

 was once a lake. The limestones are of the Quebec group, the 

 ferruginous quartzite represents the Potsdam ; the mass of the 

 Teton group is of metamorphic character. On one of these ridges 



