July, 1912. 



KNOWLEDGE. 



265 



is considered, and a chapter added on the economic side 

 of the Crustacea. >,r ^^j ^^■ 



Sea Fisheries, Their Treasures and Toilers. — By M.\rcel 

 .A. Hkkl'bel, Doctor in Science and Professor at the Institut 

 Maritime. Translated by Bernard Miall. J66 pages. 

 9-in.X6-in. 



(T. Fisher Unwin. Price 10 5 net.) 



We welcome this excellent translation of a valu- 

 able book. M. Herubel has given us a vividly in- 

 teresting account of the rapidly growing department 

 of applied science which deals with sea-fisheries, — 

 with an industry that represents more than 

 ;f 10.000,000 a year in Britain alone. With great skill 

 he has brought together the physical, 

 biological, and economic facts on which 

 sound practice and secure progress 

 must rest. And while he is v<iy 

 generous to British organisation ni 

 fisheries (and our faculty of uiiitiiiL; 

 tradition and progress), those \\1; 

 can read the book without rcali ; 

 something of the possibilities of tun In : 

 development must be either very stU- 

 complacent or very dull. M. Herubel 

 writes in a masterly way, but witli a 

 light touch, of food-fishes, fishing- 

 grounds, oceanic feeding grounds, 

 factors of destruction, fishery laws, 

 re-population, fisheries and science. 

 fishery problems, the social life on the 

 coast, fishing ports, boats and gear, 

 the fishermen, the markets, the outlets, 

 the financial aspect, the humane 

 aspect, the possibiUties ahead. But 

 this indication of the contents of the 

 book can give but a faint idea of its 

 interest. The author writes with a 

 full knowledge and with a wide outlook. 

 and scientific as he is, he has not 

 been able to shut out the glamour and 

 sparkle of the sea from his discourse. 



J- A. T. 

 The Animal World. — By F. W. 

 Gamble, F.R.S. 255 pages. 36 illus- 

 trations. 6f-in. X4.!-in. 



(Williams & Norgate. 

 Price 1 - net.) 



The big text book, 

 it has been said, is 

 out of date before 

 the last sheets have 

 been printed oft', and 

 hence the advantage 

 of attending lectures 

 given by a teacher 

 who has to keep 

 abreast of the times. 

 The present volume 

 of the Home Uni- 

 versity Library cer- 

 tainly fulfils its object 

 and enables one to 

 learn what are the 

 present opinions up- 

 on a number of bio- 

 logical matters. 

 Several of Professor 

 Gamble's chapters 

 are particularly in- 

 teresting, as, for 

 instance, that upon 

 the Colours of 

 .Animals. The Black 



explanation that the markings which cause an animal 

 to be practically invisible save it from its enemies, is put 

 down as being futile, but the reader must not let the 

 little joke that " protection in animal as in human economies 

 is thought to meet the needs of the time " make him forget that 

 no arguments are brought forward. Those who 

 have only scraps of leisure should carry Professor 

 Gamble's suggestive little book in their pocket and 



read it ;it odd moments. 



W. M. W. 



FU'.l-RK 2>)3. 

 Helix pisaiHi. 



I-'IGL'RE .294. 



llcli.x pisana on its food plant. 



Figure 295. 

 The Geographical distribution of Heli.x: pisana. 

 ^recorded distribution. Hatching = probabU' distribution. 



Munof^raph of the Land and Freslncater MolliLsca 



of the British Isles.— By }oh\ W. Taylor. Part 19. 



48 pages. 63 figures, 4 plates. lOi-in. X6^in. 



(Leeds: Taylor Bros. Price 7, 6.) 



The latest part of this monogr.iph 

 completes the account of {h'li.x piscina 

 which was just begun in Part .Will 

 and deals also with HeliciHona 

 lapicida. The plates, which are 

 more numerous than usual, show 

 coloured representations of Hyliana 

 and Zonitoides, which is included to 

 help bring up the arrears as well as 

 variations in colour and size of Helix 

 pisana and its distribution. We 

 notice that there is a figure labelled 

 H. pisana var. grasseti from the 

 Canary Islands; but judging from 

 specimens w^hich the Kev. R. Ashington 

 Bullen recently found in the same 

 locality, and exhibited alive before the 

 Malacological Society, it would appear 

 that this form should be considered 

 a distinct species. As usual, con- 

 siderable attention is given to the 

 anatomy of the species described as 

 well as to their habits and geological 

 and geographical distribution. By the 

 courtesy of the author we are able to 

 give an example of the black and 

 white drawings of the shell (see Figure 

 293), as well as to reproduce the 

 picture of Helix pisana congregated 

 on its food plant at Tenby. The 

 species is interesting, because in the 

 British Islands its range is restricted 

 to South Wales, 

 ,— 1 South-West England 

 and to Ireland. The 

 species has, however, 

 a wide range in 

 France. Spain, Italy 

 and the North of 

 Africa, and so on, 

 as will be seen from 

 Figure 295, for which 

 we are also indebted 

 to Mr. J. W. Taylor. 

 In conclusion, we 

 would say that the 

 plates are most ex- 

 cellently reproduced, 

 while Mr. Taylor 

 still continues to use 

 every endeavour to 

 deal fully with each 

 species. If we have 

 any criticism it is 

 that the parts do not 

 appear as quickly as 

 we should like, and 

 that descriptions of 

 many so-called vane- 

 ties might be omitted 

 W. M. W. 



