190 PROCEEDINGS OP THE CALIFORNIA 



Mr. Hanks exhibited, under the microscope, crystals of cinnabar 

 from Lake county, crystahized in chalcedony. The effect produced 

 by the magnifying power of the microscope was most beautiful. It 

 was evident from the form of the crystals as magnified, that the crys- 

 tallization must have taken place before the hardening of the chalce- 

 dony. 



Mr. Hanks also displayed, under the microscope, beautiful spars 

 in sihcified wood ; also a gold crystal from the Ida mine, Owens 

 River, the only known locality in which microscopic crystals have 

 been found ; also a specimen of metacinnaharite, a new mineral pe- 

 culiar to California, and recently described. 



Regular Meeting, September ISin, 1871. 



President in the Chair. 



Donations to the Cabinet : Dr. Kellogg presented a new plant 

 with the following description : 



Madia radiata— Kellogg. 



BY A. KELLOGO, M. D. 



Specific char. Stem erect ; annual ; branches alternate, loosely spread- 

 ing 1 to 3 feet high ; stipitate glandular and viscid throughout, fistulous. 

 Lower leaves narrowly-lanceolate ; middle and upper leaves ovate, sub-cordate at 

 base, lance-pointed sessile, remotely denticulate, chiefly dense stipitate glandular 

 above, 3 to 5 nerved (rarely 7) succulent. 3 to 6 inches in length, fo to \% in 

 breadth ; successively diminishing to ultimate peduncles. Inflorescence centrif- 

 ugal. Flowers large (as in Layia and Madaria), \}/^ to 2 inches, loosely co- 

 rymbose. Raj's about 13 (or duplicating in tarly blossoms). Receptacle (in 

 young state) convex ; chaff between disk and ray united ; both ray and disk 

 achenia fertile, etc. 



Found near the mouth of the San Joaquin River, and presented to the 

 Acad, about three years since ; then past its prime, but not until now in good 

 condition. 



As the plant has the showy rays of ]\Iadaria. yet differs in its fertile disk 

 achenia, its position is between Madia and Harpecarpus. Should these genera 

 be revised, it would form the type of a conspicuously radiated section of Madia, 

 under the designation of Macromadia. 



Dr. Blake referred to the animal life which he had found in hot 

 springs, at Calistoga, of 168 degrees of temperature, and the study 

 of which he had made a specialty. 



