REPORT—1890. 
534 
TasLeE IT.—Mean Slopes of the Sand in Rectangular Tanks. 
TANK A 
‘ - 9 
areacaved Experiment V., Plan 4 Experiment VII., Plan 2 
Heights of = = a 
Contours Mean Hori- Mean Hori- 
ae Height (re- Scot ve Horizontal Height (re- rem oye Horizontal 
duced to a entonretror Distances re-| duced toa Contonrestven Distances re- 
30-foot Tide) AnaICOntaGn duced toa _ | 80-foot Tide) FHeiGontorn duced toa 
of Contours + 30 f 30-toot Tide | of Contours 30 feet 30-foot Tide 
fromacw. | :9¥ 30 feeb from Tw, | ese 
above L.W. above L.W. 
Feet Feet Unit 6 inches Miles Feet Unit 6 inches Miles 
1 — —0°975 —165 as —1:792 —8°003 
0176 30°00 0°00 0:00 30°000 0-000 0-000 
0146 24°39 0:79 1355 24°546 0°647 1135 
07116 18°68 1:86 3°20 19:092 1:254 2171 
0086 13°00 2°96 5°07 14638 2°356 4085 
0056 7°46 4°64 7:95 9184 3°724 6°447 
0-026 1:87 6°63 11-38 3°730 5°428 9:397 
—0°004 —3°74 8-43 14°50 —1724 7467 127930 
—0°034 —9°35 10°30 17°80 —7:178 9°283 16070 
—0°064 —15°00 12°17 21°60 —12°632 11-780 207400 
—0°094 —20°80 13°60 23°40 —18-086 14:008 24235 
—0:124 —26:20 15°88 27-30 _ = = 
Experiment X., Plan 1 Experiment X., Plan 2 
Feet Feet Unit 6 inches Miles Feet Unit 6 inches Miles 
1 _- —0°690 —0°774 —_ — 1-032 —1°167 
0°176 307000 0-000 0°000 30°000 0-000 0-000 
0146 24-886 0-741 0°810 24°86 0-665 0°752 
0-116 19°772 2°147 2°347 19°772 1/900 27149 
0-086 14°658 4256 4°652 14°658 3°648 4124 
0°056 9544 6-916 7-560 9544 6631 7507 
0°026 4°430 9°880 10800 4-430 9101 10-290 
—0°004 —0°684 11533 12-606 —0°684 11-227 12°594 
—0°034 —5'798 13-737 15°013 — = ed 
TANK B 
Experiment III., Plan 2 Experiment IV., Plan 1 
Feet Feet Unit 3 inches Miles Feet Tnit 3 inches Miles 
1 = —3°540 —5°643 — —0-994 —1:124 
0-094 307000 0-000 0:000 30-000 0-000 ~ 0°000 
0-079 25°213 0°760 1-240 25°213 0°665 0:760 
07064 20°426 1°330 2163 20°426 1558 1773 
0-049 15°639 2052 37340 156389 27185 2°487 
0-034 10°852 3°249 5°290 10°852 4142 4714 
07019 6°065 4°332 7044 6065 6-859 7806 
0-004 1-218 6:061 9-854 1-278 9°766 11120 
-—0011 —3°509 7828 12:727 —3°509 12-046 13°710 
—0°026 —8:296 9-291 15110 —8:296 _— = 
—0°031 —13°083 11°341 18°430 _ = = 
Experiment VIII., Plan 1 Experiment VIII., Plan 2 
= = i 
Feet Feet Unit 3 inches Miles Feet Unit 3 inches Miles 
1 — —0595 —0°621 — —1°925 —2-062 
0°097 30°000 0-000 0:000 30-000 0-000 0:000 
0:082 257360 0°608 0°634 25°360 0-988 1660 
0:067 20°720 2-090 2181 20°720 1-672 1°792 
0°052 16:080 3°268 3°410 16-080 2°983 3°197 
0°037 11:440 5244 5472 11°440 57168 5538 
0022 6°800 8-987 9°378 6°800 8-398 9-000. 
0:007 27160 11400 11°896 2°160 11°285 127100 
—0'008 —2°480 13148 13°720 —2°480 13°108 14050 
—0°023 _ — — —77120 14°535 15°570 
