ON THE ACTION OFWAVES AND CURRENTS. 533 
and Results of the Experiments. 
| Criterion| Height | Height | Number| Action of the water on the sand in forming the 
of simi- | of initial| of mean | of tides bed at the lower end of the estuary 
larity | sandin | tide in | from the 
| C=l%e | teet feet start 
Manner Rate Final state 
0:490 0-25 0°265 93,839 | General Normal _ 
0-083 07125 | 0:140 99,388 | General Normal Normal 
0:083 0125 | 0140 /|130,176 — —_ Large ripple 
0:058 0-125 | 0-130 16,344 | Nearly normal) Nearly normal|Nearly normal 
0-023 07125 | 0:1325 | 13,078 Very partial | Very slow — 
0-002 0°65 0-065 L799 y |” — Zero = 
0-016 0-125 | 0-142 36,776 = — — 
0-019 0125 | 0:141 78,986 — — Not reached 
0-001) | Slope 1 pene? 17,424 —_ Zero — 
0-001! in 124 {| ,, 39,727 — = Nearly normal 
0:252 0°25 0:256 19,437 | Normal Normal — 
0-064 0:125 | 0148 18,332 | Nearly normal) Nearly normal — 
0:362 0:25 0-256 42,820 -- Normal Normal 
0:066 0-125 | 0-148 68,861 -- — —_ 
0-362 0°25 0:256 76,273 | See description — See description 
0-066 07125 | 0-148 91,184 | Seedescription — See description 
0:346 0333 | 0°337 17,206 | Normal Normal — 
0-101 0-166 | 0:179 17,879 = Normal — 
0°320 0°333 | 0348 39,809 — — Normal 
0-101 0-166 | 0-169 40,268 _ — Normal 
0°543 0:333 | 0-348 60,248 | Normal Normal Normal 
0-095 0-166 | 0:169 57,024 | Normal Normal Normal 
0°327 0°333 | 0:340 16,538 | Normal Normal = 
0:095 0166 | 0-168 15,981 | Normal Normal = 
0°315 0:333 | 0-343 31,991 | Normal Normal Normal 
0-081 0-166 | 0-175 35,129 | Normal Normal Normal 
0-278 0333 | 0:341 16,943 | Normal Normal — 
0-084 0-187 | 0-179 16,383 | Nearly normal| Nearly normal —- 
0-275 0333 | 0°345 30,584 | Normal Normal Normal 
0:088 0-187 | 0-179 35,344 | Nearly normal| Nearly normal|Nearly normal 
0-274 0333 | 0:344 16,908 | Normal Normal — 
0-074 0°187 | 0-190 18,128 | Nearly normal| Nearly normal —_— 
0:274 0:333 | 0°335 31,127 | Normal Normal Normal 
0:074 0-187 | 0-190 31,928 | Nearly normal) Nearly normal Nearly normal 
0-185 0-333 | 0:350 16,368 | Normal Normal — 
0:073 0187 | 0-191 16,577 | Partial Sluggish -- 
0:189 0°333 | 0:337 32,635 —- Normal Normal 
0-073 | 0-187 | 0-191 | 32,880 ss Ls Ripple large 
0-174 0333 | 0°349 15,871 | Normal Normal — 
0:960 0-187 | 0:198 17,184 | Partial Sluggish —_ 
0-163 0°333 | 0:349 32,501 — — Normal 
0:066 0-187 | 0-192 29,947 — — Ripple large 
0:085 0-187 | 0-187 16,577 | Partial Sluggish _— 
0080 0187 | 0:187 32,677 — — Ripple large 
