INDEX 



45i 



Thermometer, water, maximum 

 and minimum, 45, 49, 

 297 n. 

 reversing, 42-48, 45 

 Thermometric scale conversion, 



419, 420 

 Thermostat, 53 

 Thia larva, 181 



Tide, effect on shore animals, 66 

 on shore plants, 130 

 gauges, 64 

 Tomoptens, 175, 176 

 Tornado, 9 



Tow net, closing, 192, 195 

 on dredge, 291 

 on trawl, 298 

 open, 188-190, 193 

 standard, 194* x 95» x 99 

 treatment, 155, 189 

 Traces for fishing lines, 327, 328 

 Trade winds, 7 

 Trammel net, 330-33 8 

 Trawl, Agassiz, 296, 3°i-3°2 

 beam, 295-301, 2)7 

 midwater, 341, 342 

 otter, 302-305 

 Trawling, 295-305 



deep-sea, 271-277 

 shallow, 280-281 

 sorting catch, 285, 286 

 Trematoda, preservation, 378, 



379 

 Trepangs, 227, 240, 243 



collection, 74, 100 



larvae, 184, 186 



preservation, 376 

 Trichechidae, 406, 407 

 Trichodesmium, 123, 124 

 Trichogyne, 150 

 Trochammina, 81 

 Tropical outfit, 105-112, 156 

 Tuck seine. See Seine 

 Tunicata. See Urochordata 

 Turbinaria, 143 

 Tuscarora, 167 

 Typhoon, 10 



Udothea, 135. 139 

 Ulva, 126, 135, 136 

 Upwelling.a movement of deeper 

 water to or towards the 

 surface 

 cause of, 62 



Upwelling, effect on atmos- 

 pheric temperature, 12 

 Urochordata, 184, 249, 251 



preservation, 381 

 Urospora, 135 



Vanvoorstia, 126 

 Velella, 173, 174. 373 

 Veliger larva, 182, 185 

 Vertebralina, 81 

 Volcanic deposits, 210, 211 



islands, 83, 208 



mud, 213, 225 

 Volcanoes, submarine, 103 



Walrus, 406, 407 

 Water, Chapter II., 26-64 



bottle, how to work, 50, 51 

 insulating, 37-42 

 Kofoid's, for water and 



plankton, 116 

 reversing, 42 n., 48 

 bucket for samples, 34 

 chemical and physical work, 



52 

 composition, 29 

 general circulation, 57-64 

 observations needed, 28 

 source of bottom, 62 

 storage bottles for samples, 



33. 34 

 temperature, 31, 32 

 uniform conditions at great 

 depths, 27 

 Waterspout, 9, 23 

 Waves, angle of wind impact, 22 

 height measurable by baro- 

 meter, 15 

 Waxing corks and stoppers, 288 

 Weather, effect on floating ani- 

 mals, 195 



on shore animals, 65, 66 

 scale, 422 

 Whales, 383-402 



ear -bones in deposits, 214 

 Whaling stations and leturns, 



392, 393 

 White whale, 389, 399 

 Wilemcesia, 256 

 Winch, steam, 269 

 Wind, 5-9 



angle of impact, 22 

 deviation of, 5 



