Handbook of Railroad Construction; For the use of American engineers

ADDITIONS, ALTERATIONS, AND CORRECTIONS.

The reader is particularly requested to apply the following errata before perusing the work. They are partly mistakes in printing, and partly errors in the original MS. The only excuse the writer can offer for the number is, that, being engaged in Missouri, while his publishers were in Boston, he has been prevented from seeing a single proof-sheet in time for its correction.

Page 5, line 7, for "499.999," read "499,999."

- 5, l. 9, for "49.999," read "49,999."

- 10, l. 1, for "can be," read "can never be."

- 12 to 23, headings, for "reconnoitre," read "reconnoissance."

- 18, l. 24, for "36.9," read "36.8."

- 19, l. 6, for "table B," read "table D."

- 24, l. 1, for "any thing," read "every thing."

- 25, l. 17, for "horizontal line m m m," read "line 1, 2, 3," etc.

- 26, l. 2, for "land," read "level."

- 27, l. 1, for "at the place," read "at the right place."

- 28, l. 29, for "reconnoitre," read "reconnoissance."

- 30, l. 3, for "A c d B," read "A C D B."

- 32, l. 2, the point m in the cut, is one whole division above C; it should be only three fourths of a division.

- 38, l. 10 from bottom, for "276," read "268."

- 39, l. 10 from bottom, for "142.13," read "143.13"; and last line, for "58.46," read "48.46."

- 40, l. 7, for "10310,667," read "10,277,333."

- 42, l. 9, for "Thus," read "These."

- 42, l. 8 from bottom, for "2°.81 or 2° 48´.6" read "2°.86 or 2°.51.6."

- 43, l. 27, for "Hencke," read "Henck."

- 47, 48, 49, for "McCullum," read "McCallum."

- 47, l. 18, for "distance," read "resistance."

- 48, l. 6, for "infringing," read "impinging"; line 9, for "slacking," read "shackling"; l. 8 from bottom, for "increased," read "increases."

- 50, l. 17, for "110 + 15.60," read "110 + 15.62."

- 52, l. 15, for "45.59," read "45.49"; also l. 17, for "1132," read "11.32."

- 58, l. 10, for "of size," read "and size."

- 58, l. 5 from bottom, for "one cent," read "
100 of a cent."

- 61, l. 3, for "are necessary," read "are not necessary."

- 63, l. 28, for "stretches," read "stretchers."

- 65, l. 15, for "spanded," read "spandrel."

- 71, l. 6 from bottom, for "left," read "let."

- 73, l. 19, for "chains," read "chairs."

- 74, l. 5, for "across ties," read "on cross-ties."

- 74, l. 12, for "28 inches," read "27 inches."

- 75, l. 18, for "land," read "haul."

- 76, l. 8, for "top," read "bottom," and for "charred when," read "charred where."

- 76, l. 11, for "twopenny," read "tenpenny."

- 78, l. 1 and 2, for "base," read "basis."

- 84, l. 13, for "as," read "or."

- 89, l. 6, for "Whenever," read "Wherever"; l. 12, for "Letting," read "Setting."

- 90, l. 4, for "cost," read "cut."

- 93, l. 6, for "37 and 38," read "36 and 37."

- 95, l. 1, for "beach," read "bench"; l. 3, for "to so," read "so to"; l. 13, for "b being 10 ft. back of 2 is ... 100.00," read "b being 10 ft. back of 2 is 0.1 ft. higher than 2, or ... 100.10."

- 102, l. 1, head of middle col., for "Slopes 1¼," read "Slopes 1½."

- 103, l. 4 from bottom, for "and ten feet," read "and one end ten feet."

- 104, l. 9, for "any," read "very."

- 108, l. 9, for "Elwood," read "Ellwood."

- 115, l. 5, for "a loam," read "a berm"; l. 16, for "a rent," read "a vent."

- 117, l. 7, for "volcanic," read "voltaic."

- 117, l. 9, for "Round Drum," read "Round Down."

- 117, l. 18, for "Col. Puseling," read "Col. Pasley."

- 118, l. 2, for "Maillefaut," read "Maillefert."

- 118, l. 16, for "insert," read "invert."

- 118, l. 25, for "quointed," read "grouted."

- 119, l. 30, for "furnished," read "finished."

- 120, Table, for "Nochistingo," read "Nochistongo"; for "Supperton," read "Sapperton"; and for "Black Rock, W. S." read "Black Rock, U. S."

- 121, l. 19, for "Belchingly," read "Blechingly."

- 125, in table at bottom, for "90
69," read "90
66," and for "140, 20
140, 20
160 or 0.13," read "111, 20
111, 20
131, or 0.15."

- 126, l. 1, for "extensive," read "extensile."

- 127, l. 10, for "67,200," read "65,251."

- 127, l. 26, for "Hodgekinson," read "Hodgkinson."

- 128, l. 4, for "12000," read "11000."

- 128, l. 15 and 22, for "Hodgekinson," read "Hodgkinson."

- 129, l. 5, for "12000," read "11000."

- 129, l. 2 from bottom, for "Sun Wood," read "Ironwood."

- 130, l. 7, for "WL2 = 4Sbd2," read "WL = 4Sbd2."

- 131, l. 9, for "wood 143," read "wood 133."

- 134, in art. 164, for "700," read "952."

- 136, for example there given, place the following:-

and 32.58
6.1 = 5.34.

- 141, last line, Fig. 63 A was omitted; it is the same as fig. 102, page 200, inverted.

- 142, last line, for "span," read "spans."

- 146, head of col. 7, for "Top Washer," read "Thickness of Washer."

- 150, after line 9, Figs. 67 D and 67 E (page 153) should be inserted.

- 151, l. 3, for "W = 2249," etc., read "W = 2240," etc.

- 151, l. 18, for "opposite to 31,416, is the diam. 1?," read "opposite to 41,415, is the diam. 1?."

- 151, l. 19, for "1?," read "1?."

- 154, last line, for "tubular," read "tabular."

- 156, l. 4 from bottom, for "washer band," read "washer used."

- 164, l. 10 to 14, inclusive. The first number of ratios should be 20 instead of 15.

- 166, l. 11, for "69 B," read "69 A."

- 171, head of col. 5 of table, for "Rod of Arch," read "Rad. of Arch."

- 173, l. 25, for "ability," read "stability."

- 173, l. 32, for "Whence," read "Where."

- 175, l. 8, for "triangular," read "diagonal."

- 178, l. 3, for "article," read "outside."

- 184, l. 4 from bottom, for "barriers," read "voussoirs."

- 187, fig. 96 is upside down; also, fig. 97, page 188, and fig. 98, page 189.

- 193, l. 4, col. 3 of table, for ".00000675," read ".00000685"; also, l. 16, col. 5, for "straining," read "shearing"; l. 7 from bottom, for "15,000," read "18,000;" and l. 6 from bottom, for "75,000," read "105,000."

- 199, l. 7 from bottom, for "20,132," read "20,312."

- 200, l. 4, for "A C," read "A G"; and l. 6, for "that on A R," read "that on A K."

- 202, l. 7, for "on page 193," read "on page 138."

- 204, l. 5 from bottom, for "varied line," read "versed sine."

- 207, l. 5 and 6, for "F G, G E, in place of E F, E C," read "G L, G E, in place of F L, F C."

- 210, in place of "f´ = pF
4ph," put "D = V¾[V2 - d2] - V¾[l2 - d2].