58 TWENTY-SEVENTH REPORT ON THE STATE MUSEUM. 



ties. The entire number is one hundred and seventy-eight ; of 

 these ninety-five (30 granites, 24 limestones, 18 marbles and 

 23 sandstones) are from quarries in the State of New York ; 

 ten (granites) from quarries in Maine ; six (granites) from New 

 Hampshire ; twenty-six (16 marbles and 10 granites) from Ver- 

 mont ; twenty (13 granites, 6 marbles and 1 sandstone) from 

 Massachusetts ; three (marbles) from Connecticut ; two (sand- 

 stones) from Maryland ; six (sandstones) from Ohio ; four 

 from Michigan ; two (sandstones) from Wisconsin ; and four 

 from sources unknown. 



The several blocks are conspicuously labeled, giving, in addi- 

 tion to the name, the locality from which they were derived 

 and name of donor. For the purpose of geological study, the 

 limestones and sandstones bear, also, the geological formation 

 to which they belong. The number upon the labels (duplicated 

 in red on one of the corners) corresponds with the number by 

 which each is designated in the following list : 



I. Granites and Granitic rocks. 



1. Quincy Granite. A dressed block, of one cubic foot. 



Old Quincy Quarries. From the Quincy Railway Granite 

 Company. 



2. Quincy Granite. A dressed block, of about ten inches 

 cube, with one side showing rock fracture. From the same 

 source as the above. 



3. Quincy Granite. A block, 12x7x6 inches, light-colored, 

 three sides dressed, and the remaining sides showing rock 

 fracture. From the quarries of Rogers & Co., Quincy, 

 Mass. 



4. Gray Granite. A rough block, of about 10x9x7 inches, 

 from the quarries at Rockport, Cape Ann, Mass. Of the 

 Museum collections. 



5. Porphyritic Granite. A partially dressed block, 12x6 

 x6 inches. Fall River, Mass. From George Wrightson, 

 New York. 



6. Gray Granite. A dressed block, of a cubic foot, with 



one side showing rock fracture. Dix Island, Maine. From 

 Learned & Dickson. 



