230 



Part III. — Twenty-third Annual Report 



237, 238, i 

 245, 249, I 

 ; (9) 222, 

 (10) 212, ' 



180; (16) 



(13) 289 



Plaice, eggs of, change of volume during 



maturation, (16) 141. 



eggs, distribution of, (15) 229. 



distribution of, in Firth of 



Clyde, (15) 248. 



retention of, by female, (18)330. 



size of intraovarian, in small, 



(20) 356. 



embryo of, (16) 215. 



fecundity of, (9) 263. 



food of, (7) 223, 231, 236, 



239,241, 252; (8) 230, 232, 



250, 251, 252, 253, 255, 256 



233, 236. 237, 239, 240, 241 ; 



217, 219, 229 ; (20) 306, 487, 

 food of post-larvre, (15) 



224. 



food of small, (20) 524. 



growth, rate of, (11) 192 ; 



(17) 232 ; (20) 334, 337 ; (23) 125, 133. 



growth of, in Sol way Firth, (20) 346. 



growth of, on East Coast, (20) 347. 



growth, comparative, at Dunbar 



and in Denmark, (17) 246. 

 growth, comparative, of females 



and males, (20) 356. 

 growth of small, arrested in winter, 



(20) 342. 



hatching of eggs of, (12) 10; (13) 



9, 123; (14) 152; (16) 220; (17) 205; 



(18) 330; (21) 180; (22) 262. 



immature, abundance of, in shallow 



water, (22) 28. 



• non-migratory, (8) 168. 



at Grimsby, (12) 386. 



landed at Grimsby, (13) 332. 



large hauls of, (20) 107. 



larvfe of, (12) 168, 215. 



larval and post-larval stages of, (15) 



175. 



lines of growth in otiliths of, (23) 



126, 133. 



in scales of, (23) 125. 



mature and immature, (8) 166. 



maturity, minimum size at, (8) 161, 



162, 163. 



maturity, average size at, (18) 190 ; 



(22) 156. 



maturity, average size at, in north- 

 ern North Sea, (18) 199. 



- — maturity, average size at, in North 

 Sea, Kattegat, and Baltic, (18) 199. 



maturity, average size at, in south- 

 ern North Sea, (18) 197. 



maturity, size at, (10) 238 ; (20) 357. 



maturity, size at, in different regions, 



(20) 358. 



measurements of young, (17) 236. 



■ migrations of, (7) 406; (11) 179; 



(15) 375; (21) 40. 

 ■ migrations of, experiments on, (9) 



412. 



migrations of, extent of, (21) 42. 



■ migrations of, in relation to matur- 

 ity, (8) 168. 



movement of, in inshore waters, (11) 



16, 185. 



— movement, rate of, (21) 42. 



multiple tumours in, (3) 66 ; (4) 214. 



mutilated specimen of, (21) 229. 



Plaice on Fisher Bank, (21) 41. 



parasites of, (18) 150, 163, 164; (19) 



121 ; (23) 108. 



peculiarly coloured, (13) 234. 



percentage of marked, recovered, 



(15) 375. 



period of greatest growth of, (17) 



239. 



post-larval stages of, (16) 225, 228. 



proportion of males to females, (8) 



348, 349 ; (20) 357. 

 proportion of immature, landed by 



trawlers, (22) 18. 

 quantity of small, taken in shallow 



water by otter-trawl, (22) 28. 

 rearing of post-larval, (15) 14; (16) 



223. 



relation of distribution of, to depth 



of water, (20) 347, 352. 

 relation of length to weight, (22) 



144, 145, 205, 240. 

 relation of spawning period of, to 



temperature, (15) 248. 

 relation of temperature to growth of, 



(20) 342. 



relation of temperature to spawning 



of, (20) 344. 

 reversed action of gill-cover in, (22) 



287. 



sexual proportions of, (10) 239. 



size and age of, at maturity, (17) 246. 



size-limit between mature and im- 

 mature, (22) 18. 



size-limits, various, proposed, (18) 



190. 



size of, on deep-water grounds, (21) 



41. 



sizes, maximum, of maleand females, 



(20) 357. 



sizes of, (14) 143. 



small, difficulty of preserving, alive 



on trawlers, (20) 107. 

 spawning of, influence of change of 



temperature on, in confinement, (20) 



441. 



spawning grounds of, (8) 259 ; (15) 



230 ; (23) 20. 

 spawning period of, (4) 250 ; (7) 



171, 187 ; (8) 260 ; (10) 234 ; (15) 230 ; 



(17) 97 ; (20) 338. 

 spawning period, duration of, in 



large tank at hatchery, (22) 262. 

 special distribution of young, on 



beach, (17) 235. 

 stage at which larva? begin feeding, 



(16) 224. 



tenacity of life in, (23) 252. 



variability of, (18) 201. 



varieties of, (20) 336. 



young, caught in bag-net fishing, 



(23) 157. 



Plankton in fresh-water lochs, distribu- 

 tion of, (17) 133. 



of Forth, (16) 155. 



method of collecting, (15) 212. 



notes on animal, collected by H. M. S. 



" Research," (15) 305. 



plant, (15) 212. 



didymus-, characters of, (15) 302. 



phyto-, report on, (15) 297. 



