Longitude. Seconds, in meters.] Azimuth. Back azimuth. To station. Distance. Geographical positions of tertiary points north of Keokuk, Iowa. [Referred to the Cairo Astronomical Post.] 265 25 21 85 26 03 109 58 56 264 25 50 283 35 14 308 37 42 Δ pper Base Δ Church Ballinger A Nashville A Nashville 1,026.5 335 53 37 1,998. 7 2,657.2 972.3 159 28 56 A Niota 1, 123. 8 1 Nauvoo Spire or A Catholic is the very high spire of Catholic Church at Nauvoo, Ill. A St. Mary's Spire is spire of St. Mary's Catholic Church, Fort Madison, Iowa. 40 37 42.55 1, 312. 4 1, 741. 2 2.5 91 19 13.88 326.2 207 46 53 .do 93 18 11 273 17 17 .do 1,942.8 31 12 49 211 12 11 A Niota 2, 770. 7 65.1 A2 is oak stake on down-stream side reservoir hill, Fort Madison, Iowa. Name of point. Geographical positions of tertiary points north of Keokuk, Iowa-Continued. 35 00 52 356 18 45 215 00 07 335 05 14 355 51 35 355 51 05 333 59 37 333 54 23 A Appanooce. Mill Chimney A Westcott. A Dallas. Dallas. A Dallas ✩ Lomax 144 Meters. 1, 449. 8 40 41 01.52 46.9 91 07 55. 52 1, 303, 8 818.3 1,015.3 830.0 A B. M. Pat3. □入 123 178 43 44 A Ellison..... A Carman.............. Mill Chimney is prominent smoke stack at Dallas City, Ill. Church Spire is finial of Catholic Church at Burlington, Iowa. A B. M. Pat. is B. M. pipe and A tile on promontory 4 miles below Burlington, Iowa. "Court-house Dome is finial of Court-house Dome at Burlington, Iowa. Oquawka Spire is finial of Methodist Church spire in Oquawka, Ill. 755.5 704.5 6,972.3 3, 329. 1 735.8 749.6 Geographical positions of tertiary points north of Keokuk, Iowa-Continued. AN. Boston Spire is center of square tower or spire of Methodist Church in New Boston, Ill. DESCRIPTIONS OF SECONDARY TRIANGULATION STATIONS FROM KEOKUK, IOWA, to PORT LOUISA, IOWA. A Church is on Illinois side, on bluff in timber on land owned by Dr. Kennal. Station is about 250 meters south of Mount Bell schoolhouse and 100 meters below a very prominent ravine. A road leaves river road at mouth of ravine and runs on upper side of ravine past the schoolhouse. A house stands near river bank on lower side of ravine, occupied by J. H. Brown. A small barn stands at foot of bluff, on back side of cultivated field, directly in front of station. Geodetic point is center of copper bolt in vitrified tile 18 inches square and 4 inches thick; 3 feet under ground. Tile is surmounted by a 3-inch pipe 4 feet long, with cast iron cap. Station is 150 meters back of crest of bluff and is about opposite dry dock at middle lock, Des Moines Rapids Canal. A Pump House is center of iron smokestack in center of small pump house at upper end of dry dock at middle lock of Des Moines Rapids Canal. Pump house stands on embankment between canal and river. A Mount Bell is the center of top of cupola of small frame schoolhouse on side of bluffs on Illinois side; opposite and a little above middle lock, Des Moines Rapids Canal. Sandusky is the center of a copper bolt leaded into coping stone on east side of wall and over south sluice gate of waste gate, in dam between Des Moines Rapids Canal and River; opposite Sandusky Station on St. Louis, Keokuk and Northwestern Railroad. A house stands above and on dam. A Waggoner is on Illinois side, on first bluff below mouth of Waggoners Creek. Station is on cleared land, 17 meters south of wire fence running back from crest of bluff, and 45 meters back from crest of bluff. A wagon road runs back from river above creek and below station. Geodetic point marked by center of copper bolt leaded in tile 18 by 18 by 4 inches, buried 3 feet below surface and surmounted by a 3-inch iron pipe. A Vineyard is on bluffs on Iowa side, three-fourths of a mile above middle lock of Des Moines Rapids Canal. It is in a vineyard 20 feet back from crest of bluffs. An ice house stands on bank of canal 500 feet above station. A hedge fence runs up the hill from the railroad 300 feet below station and on lower edge of vineyard. Institute is on Iowa side on bluffs on land owned by Park Bluff Association. Station is just north of narrow lane running east and west, and 200 meters back of crest of bluff. Station is marked by a 4 by 18 by 18 inch vitrified tile, with copper bolt leaded in the center, surmounted by a 4-inch iron pipe. Station is 300 meters below summer cottages on crest of bluff. A deep ravine is between houses and station. Ballinger is at top of bluff on Iowa side, 50 feet back from crest, and one-half mile above M. P. 37 on St. Louis, Keokuk and Northwestern Railroad. Station stands on a narrow ridge running parallel with the river. Geodetic point marked by copper bolt leaded into vitrified tile 4 by 18 by 18 inches, buried 3 feet under ground and surmounted by a 4-inch iron pipe. Larry is on highest point of bluff just above mouth of Larrys Creek, on Illinois side of river. Top of bluff is cultivated, slopes are timbered 15 meters from wire fence running along crest of bluff. Small one-story white frame house stands 200 meters above. Geodetic point is marked by a copper bolt leaded into a 4 by 18 by 18 inches vitrified tile, 3 feet under ground, surmounted by a 4-inch iron pipe. Edmunds is on crest of low bluff on Illinois side, one-half mile below and opposite upper lock Des Moines Rapids Canal. Station stands on point of small knoll 38 meters in front of hedge fence and 45 meters below corner of fence. It is about 400 meters below where bottom land runs out into river to a point about 600 meters below Sonora Landing. Geodetic point is marked by a center of copper bolt leaded into a 4 by 18 by 18 inch vitrified tile, buried 24 feet in ground, surmounted by a 4-inch iron pipe. Nashville is on Iowa side, on top of bluff about 400 meters back of the town of Nashville. It is at a wire fence running north and south and on highest part of ridge between two deep gullies running to river. A one and a half-story frame house stands 300 feet back of and a little above the station. Geodetic point marked by center of copper bolt leaded into a 4 by 18 by 18 inch tile, 24 feet under ground, surmounted by a 4-inch pipe. A Sheridan is on Illinois side, on hill in cultivated field just above a hedge running east and west. Station is at northeast corner of orchard and about 400 meters above Sheridan Creek and same distance back of river. Geodetic point marked by copper bolt in tile, surmounted with 4-inch pipe. Dobson is on Illinois side, at top of bluff near crest, and 150 meters from the river. It is on upper side of point above Nauvoo, 600 meters above Nauvoo Landing. Nearly in direct line of N. and S. street prolonged and north of a two-story brick house, 32 meters north of fence corner at upper side of vineyard. Geodetic point marked by copper bolt in square tile and iron pipe projecting out of ground 8 inches. |