484 



PROCEEDINGS OE THE ROCHESTER MEETING 



in volume 11, they cost more, owing to the necessary employment of 

 lithography. 



Reference to the table below will show that in cost volume 12 com- 

 pares favorably with the average volume, but is a trifle more than 

 volume 11 in cost per page, being more than one hundred pages smaller 

 and with increased cost of illustrations. 





Average. 

 Vols. 1-10. 



Vol. 11. 



Vol. 12. 





pp. 544. 

 pis. 26. 



pp. 651. 

 pis. 58. 



pp. 538. 

 pis. 45. 





$1,465 14 

 290 40 



$1,815 56 

 373 68 



$1,445 73 

 414 80 









$1,755 54 



$2,189 24 



$1,860 53 





$3 23 



$3 36 



$3 45 





Exact classification of subject-matter has not been attempted, but the 



following comparative table presents a reasonably correct analysis of the 

 contents of volumes 7 to 12, inclusive : 



r>h,i<inr,« VoL 7 - VoL 8 - VoL 9 - VoL 10 - VoL n - V 0l. 12- 



uivuwns. Pages. Pages. Paqes. Pages. Pages. Pages. 



A real geology , 38 34 2 35 65 199 



Dynamic geology 3 24 85 24 110 23 



Economic geology 4 14 16 28 7 5 



Glacial geology 105 98 138 96 21 55 



Historical . . . . 16 46 



Memoirs of deceased members 28 8 12 27 60 2 



Official matter .56 69 54 72 59 58 



Paleontology 123 58 64 68 188 5 



Petrology 40 43 44 59 54 24 



Physiographic geology 53 5 . . 37 10 53 



Relation of geology to pedagogy 12 



Rock decomposition 74 26 17 9 . . 16 



Stratigraphic geology 21 67 28 62 31 98 



Terminology 1 . . . . 1 



Total 558 446 460 534 651 538 



The " Index to Volumes 1 to 10 " was issued on December 31, 1900, 

 at a cost of $501.75. It makes a volume of 209 pages, and is uniform 

 in every respect with the other brochures of the Society. It is chiefly 

 a compilation of the indexes to the individual volumes, but many new 

 titles have been added. The work of combining and adjusting the ten 

 indexes and preparing new material was done almost entirely by Mr 

 and Mrs George Wood, who are experts in indexing through long 



