384 



Part III — Seventh Annual Report 



Cross between Lochleven Trout and Hybrid of S. salar (male), and 

 Loelileven Trout (female). 



On November 6, 1886, 3000 ova from a Lochleven trout (which was 

 hatched in 1876) were milted from a hybrid between a male salmon, from 

 the Teith, and a female Lochleven trout, hatched in 1879. The progeny 

 (in pond 7) on May 22, 1889, were about fifty in number, 11 inches in 

 length, and very deep in the body. 



Hybrid between Loelileven Trout, and Hybrid of Hoicictoun Salmon 

 par and. Lochleven Trout. 



On November 23, 1886, 1000 eggs were obtained from a hybrid 

 female (the result of a cross on November 23, 1883, between a female 

 Lochleven trout and a Howietoun salmon par) and milted from a three 

 year old Lochleven trout. About 700 hatched on February 10, 1887. 

 At the last count in June 1888, there were about 600 of these, and all 

 looked well. 



Hybrid from Hybrid Parents. 



In pond 7, there were on the 22nd May 1889 several specimens of a 

 hybrid, spawned in November 1886, and hatched in January of the 

 following year. The parents of these hybrids were three years of age, 

 and both half-hlood, being the product of a cross between the female of the 

 American char, Salmo fontinalis, and a male Loch Rannoch char. 



J. R. G. M. 



XII. NOTES ON CONTEMPORARY WORK RELATING TO 

 FISHERIES IN THIS AND OTHER COUNTRIES. By T. 

 Wemyss Fulton, M.B., and J. H. Fullarton, M.A., B.Sc. 



In the following pages will be found an account of the contemporary 

 fishery work in progress in this and other countries. Much of the infor- 

 mation has been obtained from reports, memoirs and other publications 

 received in exchange for the Annual Report of the Board, and we have to 

 thank Lieut. Drechsel, Dr Petersen, Captain Dannevig, His Highness 

 Prince Albert of Monaco, Professor Pouchet, Professor Marion, Dr 

 Sauvage, M. Raveret Wattel, Dr P. P. C. Hoek, Mr Gilbert C. Bourne, 

 Professor Herdman, and others, for information which will be found 

 embodied below. We have also to thank Mr W. Anderson Smith, 

 Ledaig, and Mr H. A. Webster, Librarian, University of Edinburgh, for 

 translations of several of the foreign memoirs and pamphlets. 



GREAT BRITAIN. 



In a paper 1 On the Cranial Nerves of Elasmobranch Fishes,' read 

 before the Royal Society,* Professor Cossar Ewart describes in detail the 

 anatomical arrangement of the cranial nerves of Laeman/us and of Raia 

 batis. The arrangement of these nerves in both fishes is illustrated by 

 woodcuts. The author states that a comparison of the arrangement of the 

 cranial nerves of Lacmargus and Raia with those of Petromyzon, Scyllhtm, 

 Galeus, and other familiar forms, renders it impossible to accept many of 

 the statements hitherto made as to the nature, distribution, and segmental 

 value of the cranial nerves of vertebrates. A comparison between the 

 * Proc, Roy. Soc, vol. xlv. p. 524, 1889. 



