90 Great Britain Division XXXVlI. West Arcade. 



738. ATKINS WATER SOFTENING CO., 62 Fleet Street, London. 

 Apparatus for removing carbonate of lime from water to prevent incrustation in boilers ; and 

 also all impurities (sewage and other matters) so injurious to the culture of fish in artificial 

 streams, brooks, tanks and aquaria. 



741. WHITSTABLE COMPANY OF FREE FISHERS AND 

 DREDGERS, in the County of Kent, known as " Whitstable Oyster 

 Company" Thomas G. Browning, Clerk, Whitstable. (1) Samples of Oysters, Living Spat 

 (shown microscopically) and Brood. Facsimile of natural Oyster Ground, with boring molluscs 

 and other enemies ; algee, sponges, zoophytes, &c. Samples of soil. (2) ' Collection of Oyster 

 Shells. ' (3) Act of Incorporation, 1793, and Seal of the Company. (4) Collection of 

 preserved Zoophytes and Polyzoa found at Whitstable. (5) Collection showing Teredo navalis 

 and its ravages. (4 and 5 lent by Sibert Saunders). 



743. EXETER, THE MOST HONOURABLE THE MARQUIS OF, 

 Burghley House, Stamford (W. T. Silk, Pisciculturist to the Marquis of Exeter.) Yearling Trout. 



744. ANDREWS, THOMAS, Westgato House, Guildford. Yearling 

 Trout. 



744a. CAPEL, CHARLES CECIL, Cray Fishery, Foots Cray, Kent. 

 Yearling Trout. 



745. CHAMBERS, W. OLDHAM, F.L.S., Lowestoft. Yearling Trout. 



748. CURTIN, FERGUS, Mucknish Castle, Burren Oranmore, Ireland. 

 (1) An Oyster Lifter, Invented by Exhibitor. (2) Oysters, Red Bank, Burren. (3) 

 Scollops, and other Shellfish. 



7486. WALLSCOURT, LORD, Ardree, Oranmore, co. Galway. Natural 

 (or Native) Oysters from uncultivated beds at Ardree, Galway Bay, the property of 

 Exhibitor. 



748c. BRAZIER, ALBERT, Southwick, Brighton, Sussex. Oysters, 

 natives, seconds, and some oysters cultivated and fattened in the River Adus. 

 See also Nos. 763, 765, 766, 767, 772, 773, 789. 



DIVISION XXXVII. [West Arcade.] See Plan, p. 92. 



Models and drawings of fish passes and fish ladders. 

 Scientific investigations. 



749. GAIL, RICHARD, Newcastle-on-Tyne. Gail's Lock Swimming 

 Salmon Pass. This system of pass enables the heaviest spawn-laden salmon to surmount any 

 obstacle in rivers, such as natural falls, dams, or weirs of any height, even to 100 feet or more, 

 by swimming through it in unbroken water from the lower to the upper water, without 

 fatigue, exposure, or having to leap. The quantity of water to work this pass is small, self- 

 acting, and regulated exactly to suit itself to any height of the water in the river in freshes or 

 floods. The velocity of the water does not increase as it descends, and in each lock is nearly 

 quiescent and purls about, imposing no exertion on the fish, and as fish and water are the same 

 specific gravity, they can ascend 100 ft. easier than a man can ascend the same height by a stair. 



749. O'KEEFE, M. T., M.I.C.E.L Model of High and Low Water 

 Fish Pass. Executed in concrete on the River Lee, co. Cork, Ireland. 



750. EXETER, THE MOST HONOURABLE THE MARQUIS 

 OF, Burghley House, Stamford. (Models and Apparatus by W. T. Silk, Pisciculturist to the 

 Marquis of Exeter.) (1) Model of Fish Breeding and Rearing Establishment. (2) Apparatus 

 for Hatching Salmonidae. (3) Apparatus for Rearing Salmonidse. (4) Apparatus used in 

 transporting Black Bass from U.S. America, with Pump. (5) Tank for conveying Young of 

 Salmonidse long distances, with Electric Pump attached. (6) Apparatus for carrying Ova 

 of Salmonidae. (7) Hatching Apparatus for Cod, Soles, Turbot, Herring, &c. (8) Hatching 

 Apparatus for Pike, Roach, Perch, and Tench. (9) Two Salmon Ladders, One Jumping 

 Ladder, One Swimming Ladder. (10; Food for Fry. (11) Model of Fish Hatching. (12) 

 Fish Passes. (13) Movable trap for catching Salmonidfe. 



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