34 PROCEEDINGS OF THE CALIFORNIA 



fessor Brush of Yale College, and a letter has just been received 

 from him giving the results, which will be found in the preceding 

 pages, and which may appropriately be followed by a few remarks 

 on the size and general appearance of the mass, with such other 

 facts in regard to it as may be of general interest. 



The weight of the mass of which the analysis is given above was six hundred 

 and thirty-two pounds, when it arrived in this city, and about two pounds have 

 been since cut from it. 



Its shape is irregular, but in general it is that of a flattened elongated 

 slab, having a length of four feet one inch and an average breadth of about 

 eighteen inches ; its thickness is irregular, varying from two to five inches. It 

 has evidently been long used as an anvil, having been partly buried in the 

 ground in an upright position, having a flat face of about four inches square on 

 the top, with two holes drilled in the projecting edge for adding to the con- 

 venience of its use as a blacksmith's anvil. 



i 



The mass is now placed in the Mayor's office, it having been deemed inadvis- 

 able to expose it on the Plaza, as desired by the donor, on account of its liabil- 

 ity to rust in the damp atmosphere of San Francisco, and the difficulty of 

 securing it from injury by careless or mischievous handling. 



Professor Brush remarks that " the composition of this meteorite corresponds 

 very closely with that of another meteoric iron from Tucson " discovered by 

 Mr. Bartlett and analyzed by Professor J. Lawrence Smith. A comparison of 

 the analyses of Professors Brush and Smith and a reference to Mr. Bartlett's 

 work seem to render it highly probable, to say the least, that the two analyses 

 were of pieces cut from the same mass. 



In this connection I will add to General Carleton's quotation from Mr. Bart- 

 lett's book a few lines which complete what is said in regard to the meteorites 

 seen by him at Tucson. Mr. Bartlett adds, after stating that the mass was 

 found about twenty miles distant towards Tubac and about eight miles from the 

 road, " where we were told are many larger masses. The annexed drawing 

 gives the appearance of this singular mass. There is another large mass within 

 the garrison grounds, of which I did not take a sketch. With much labor 

 Dr. Webb broke off a fragment of this meteorite, for the purpose of analysis." 



The wood cut which Mr. Bartlett gives of the meteoric iron, which he notices 

 as having been used as an anvil, shows at once, as does also the description, that, 

 contrary to General Carleton's idea, this mass and the one which is now in San 

 Francisco, are not the same. The mass figured, by Mr. Bartlett is of a very 

 peculiar shape, well adapting it to use as a common blacksmith's anvil, as it 

 has a broad, flat top, and is supported by two legs. 



In the absence of evidence to the contrary, it is reasonable to suppose that 

 the mass forwarded by General Carleton is the one spoken of by Mr. Bartlett 

 as " another larger mass," and of which no drawing was made ; while, on the 

 other hand, a piece was taken for analysis. This piece is almost certainly the 

 one analyzed by Dr. Smith, and hence the close agreement in the two analyses — 



