Geological Survey of the State of Ohio. 347 



Rem. 23. Ttatg and ttw appear to me to have the same meaning, and 

 to have been originally the same word, the latter being derived from 

 the former by apocope. I see no reason either for making the termi- 

 nation wg an old accusative form, as Passow supposes, or ttw an old 

 Doric genitive, as the same lexicographer has done. 



The 15th series contains adverbs of number. They are formed 

 immediately from the 3d series or adjectives of quantity, by adding 

 the termination itig, (=Sansc. s'as, Lilhuan. gis ;) comp. TsiQ&icig, 

 nBvx&xig, TiolliLXig, eic. — Icriiicig has various meanings; (1.) as of ten ; 

 (2.) as many ; (3.) eqvally ; (4.) in as many ways. 



Rem. 24. The medial a of this series is sometimes doubled for the 

 sake of the measure; as Toaudcmg^ roaadxt,, daadott. Comp. Rem. 10. 

 supra. 



Rem. 25. The final s is sometimes dropped before a consonant for 

 the sake of the measure ; as, Touadxi, noadcxi,, 6a(x)ci,. 



The appearance of these correlatives in the cognate Indo-European 

 lanjruaores will be reserved for a future number. 



Art. X. — First Annual Report on the Geological Survey of the 

 State of Ohio ; by W. W. Mather, principal Geologist, and 

 the several Assistants, pp. 134. Columbus, Ohio. 



(Communicated.) 



This document reflects credit not only on the board, by which 

 it was prepared, but the state by whose munificence they were 

 enabled to prosecute their researches. It embodies a mass of val- 

 uable and well digested facts, collected during the geological in- 

 vestigations of the past season. These facts are of a practical 

 character, and directly applicable to the arts. Technical terms, 

 and theoretical speculations, as a general thing, seem to have 

 been sedulously avoided. We propose to lay before our readers 

 an abstract of this valuable document, as well as to notice some 

 statements, which conflict with our own observations. 



The corps was organized last June. Prof W. W. Mather of 

 New York, was appointed chief or superintending Geologist. 

 Subordinate to him were four assistants proper, one acting assis- 

 tant, and one topographical engineer. For the better attainment 

 of the objects of the survey, several distinct departments were 

 created. To Dr. S. P. Hildreth, of Marietta, was assigned the 

 department of palaeontology. To Dr. J. P. Kirtland of the Gin- 



