54 
ENGINEERING REPORTS. 
Finally, I cannot omit saying that in obtaining the results 
herein communicated, I have been greatly aided by Messrs. 
C. C. Smith and D. J. Johns, respectively, in charge of the 
Transit and Level parties." 
Having thus given a detailed description of the whole line, it 
is proper to refer to some of its principal characteristics, and 
the cost of the road. 
The following tables show the length, rise and fall, and rate 
per mile of every grade, as also the total ascent and descent at 
each successive change, over the middle division, embraced be- 
tween the Atlantic and Pacific plains. 
Table of Grades from Jaltepec River to Pacific Plains. 
Division II., Sections 1 to 11 inclusive. 
Stations of 100 Feet. 
Length. 
Elevation 
above 
Pacific. 
Total rise 
of each 
Grade. 
Total fall 
of each 
Grade. 
Total 
Ascent. 
Total 
Descent. 
Grade per Mile. 
Aacend'g. ] Descen'g. 
From 
To. 
Feet. 
Feet. 
Feet. 
Feet. 
Feet. 
Feet. 
Feet. 
Feet. 
0 
115 
0 
20 
2000 
115 
Level. 
Level. 
20 
74 
5400 
160 
45 
45 
44 
74 
127 
5300 
175 
15 
60 
15 
127 
230 
10,300 
292 
117 
177 
60 
230 
407 
17,700 
230 
62 
62 
m 
407 
476 
6900 
194 
36 
98 
m 
476 
503 
2700 
218 
24 
201 
47 
503 
527 
2400 
205 
13 
111 
28i 
527 
539 
1200 
215 
10 
211 
44 
539 
584 
4500 
170 
45 
156 
53 
584 
610 
2600 
155 
15 
171 
30| 
610 
655 
4500 
155 
Level. 
Level. 
655 
705 
5000 
197 
42 
253 
44i 
705 
723 
' 1800 
200 
3 
256 
9 
723 
778 
5500 
232 
32 
288 
30£ 
778 
884 
10,600 
352 
120 
408 
60 
884 
915 
3100 
338 
14 
185 
24 
915 
933 
1800 
338 
Level. 
Level. 
933 
987 
5400 
307 
31 
216 
30 
987 
1020 
3300 
325 
18 
426 
29 
1020 
1070 
5000 
310 
15 
231 
16 
1070 
1095 
2500 
323 
13 
439 
2*H 
1095 
1126 
3100 
305 
18 
249 
1126 
1137 
1100 
305 
Level. 
Level. 
! 1137 
1180 
4300 
340 
35 
474 
43 
