124 Scientifie Intelligence. 
Descent of the Alleghany, Ohio, and Mississippi Rivers. 
| DISTANCES.) FALL. | FALL PER M, 
- ~ Miles, Feet. Feet,| Inches 
From Coudersport to Olean Point, 40 | 246) 6 2 
From Olean Point to Warren, 50 | 216) 4 4 
From Warren to Franklin, 70 | 227; 3 3 
From Franklin to oe 130 | 261; 2 
From Pittsburg to Beav 26 30| 1 1105 
From Beaver to Wheeling, 62 | 49|— 9%5 
From Wheeling to Marietta, 90 | 49| — 62% 
From Marietta to Le Tart’ s Sho als, 31 16| — 6255 
From Le Tart’s Shoals to the mouth of Ka- 55 | 33|— 39, 
From mouth of Kanawha to Porstmouth, 94 | 48) — 62%, 
rom Portsmouth to Cincinnati, 105 | 42) — 4,895 
From Cincinnati to Evansville, 328 | 112) — 43% 
From Evansville to the Gulf of Mexico, 1365 | 320) — 244 
From Coudersport to the mouth of the fe 
Mississippi 2 \ 2446 |1649 
Elevations of the Ohio River at low water. 
et above tide. 
Mouth of Ohio, above high tide, in the Gulf of ; Mexico, “O75 
Mouth of Wabash (approximately), 297 
Evansville (approximately), . . : ‘ . 820 
New Albany, below the Falls, . : J i 353 
Louisville, above the Falls, - ; ‘ ‘ ot STF 
Cincinnati, . ‘ é é ‘ j F 432 
h, : : ‘ . 474 
outh of Great Kanawha, . j ‘ ‘ ‘ 522 
Head of Le Tart’s Shoals, ‘ ; 
Marietta span of Muskingum), p : ‘ \ 571 
Wheeling, : : ; . 620 
Pittsburg, ; ‘ : . 699 
A apnea : j ; 960 
War ; - 3 , ; a Ps 
Chautauque eke, : ‘ ‘ : : ; 1,306 
Olean Point, ‘ ‘ : ‘ ; ; . 1,403 
Mouth of ennye: ‘ 1,419 
Conia ‘ ‘ si . 41,480 
Couders ; : : . ‘ 1,649 
Surface Of ues Erie, : d ‘ 565 
The reader will also find in Mr. Eller’s wok — information on 
the descent of the various tributaries of the Ohio and other valuable 
details of By gi interest. 
2. Coup dwil sur la Constitution Géologique de Plusieurs Provinces 
de P Espagne, oe MM. p & VERNEUIL et CotLoms, suivi d’une descrip: 
