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results 1-20 of 84 item(s)  page 1 of 5 : ( <<  1  2  3  4  5  >> ) :: previous : next
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Diagram of the method used in experimental hatching of quahaug eggs and rearing of the young larvae at
1. Diagram of the method used in experimental hatching of quahaug eggs and rearing of the young larvae at the Wellfleet laboratory. It represents a cross-section of the laboratory, showing a small 1 1/2 horse power gasoline engine (B), connected by a belt with a pump (C), by which salt water is forced from below into a tank (A) situated near the roof. The laboratory is located on a wharf over the water, which enables salt water to be obtained directly from beneath the floor. The inlet of the pump is guarded by a strainer (H), which prevents seaweed entering the pipe. From the tank the salt water is conducted through the laboratory by a large pipe set with small petcocks. From these petcocks pieces of rubber tubing (F) lead to the hatching tubs (E), which consist of half barrels fitted with sand filters (D). The tubs are placed over a sink (G) which carries off the filtered water. By this arrangement a continuous flow of water is established through the hatching tanks.
Solea variegata : Larva of Thickback Newly hatched, April 24, 1889... Pigment as seen by reflected light.
2. Solea variegata : Larva of Thickback Newly hatched, April 24, 1889... Pigment as seen by reflected light. yk: yolk (1); Solea variegata : Larva...two days after hatching, April 23, 1889... Pt, pectoral fin; ht, heart (2); Pleuronectes flesus : Larva of flounder (Pleuronectes flesus) two days after hatching, February 20, 1889, from egg artificially fertilised (3); Pleuronectes flesus : Larva...six days after hatching, February 24, 1889...; same magnification (4); Pleuronectes flesus : Young flounder taken in Mevagissey Harbour, April 2, 1889; drawn April 5.... (5)
Boney Hatching a Bulletin
3. Boney Hatching a Bulletin
Embryo (3 days before hatching) and larva (13 days after hatching) of Lepidosiren paradoxa Fitzinger
4. Embryo (3 days before hatching) and larva (13 days after hatching) of Lepidosiren paradoxa Fitzinger
Pleuronectes flesus, Young Flounder taken in Mevagissey Harbour, Aporil 2, 1889... pw, pelvid fin (1);
5. Pleuronectes flesus, Young Flounder taken in Mevagissey Harbour, Aporil 2, 1889... pw, pelvid fin (1); Pleuronectes limanda, Larva of dab...new hatc hed, from artificially fertilised egg, March 11, 1889. pt, pectoral fin; yk, yolk (2); Pleuronectes microcephalus, Larva of Merry Sole, March 25, 1889, four days after hatching, from artificially fertilised egg; l, liver; ht, heart (3); Pleuronectes platessa, Larva of Plaice..., February 27, 1889, five days after hatching, from artificially fertilised egg; a, anus; nch, notochord (4); Rhombus laevis, Young brill, taken at surface of water in Sutton Pool, June 1, 1889 (5)
Baird Station. Outlet of Wiley Creek Ditch on Colchoolooloo Hill, Showing Water Connections with Hatching
6. Baird Station. Outlet of Wiley Creek Ditch on Colchoolooloo Hill, Showing Water Connections with Hatching House. This ditch furnishes the water supply for hatching house during the winter
Manner of Distributing Water to the Hatching Tables
7. Manner of Distributing Water to the Hatching Tables
Working Drawings of Hatching Table
8. Working Drawings of Hatching Table
Seth Green's Hatching Box (fig.1); Vertical section of the same (fig.2); Vertical section of Hatching
9. Seth Green's Hatching Box (fig.1); Vertical section of the same (fig.2); Vertical section of Hatching Box of H.M.Bannister (fig.3); Stilwell and Atkin's Shad Box (fig.4); Vertical Section of Same (fig.5)
Fish Hawk; One Hatching Cone, 3 Hatching Cylinders, 1 Syphon Funnel, 2 Spawn Pans, 1 Spawn Pail, 1 Spawn
10. Fish Hawk; One Hatching Cone, 3 Hatching Cylinders, 1 Syphon Funnel, 2 Spawn Pans, 1 Spawn Pail, 1 Spawn Dipper
Apparatus for Hatching Buoyant Fish Eggs
11. Apparatus for Hatching Buoyant Fish Eggs
Larva of Lepidosiren paradoxen 30 days after hatching
12. Larva of Lepidosiren paradoxen 30 days after hatching
Interior of Shad Hatchery, Showing Automatic Hatching Jars
13. Interior of Shad Hatchery, Showing Automatic Hatching Jars
One compartment of hatching tank, with box hinged in position, seen from above
14. One compartment of hatching tank, with box hinged in position, seen from above
Side view of hatching tank, showing two boxes in position, with oscillating bar raised
15. Side view of hatching tank, showing two boxes in position, with oscillating bar raised
Hatching tank...seen from above
16. Hatching tank...seen from above
Elevation of filter, Scott-Johnstone tipping-box, hatching tanks, and oscillating apparatus
17. Elevation of filter, Scott-Johnstone tipping-box, hatching tanks, and oscillating apparatus
Marine Biological Station at Port Erin: Interior of Hatching Room, Showing Dannevig Boxes (empty)
18. Marine Biological Station at Port Erin:
Interior of Hatching Room, Showing Dannevig Boxes (empty)
Anthony's Turbot Rearing Tank, for the Experimental Hatching of the Turbot
19. Anthony's Turbot Rearing Tank, for the Experimental Hatching of the Turbot
Exterior of the laboratory at Wellfleet, showing the hatching tubs. This building, formerly an oyster
20. Exterior of the laboratory at Wellfleet, showing the hatching tubs. This building, formerly an oyster house situated on the Chequesset Inn wharf, was provided in 1908 for the use of the department by Mr. L. D. Baker of Wellfleet. One large room, 20 by 30 feet, is used for the laboratory, while two small rooms adjoining are utilized for sleeping quarters. The situation over the water affords satisfactory facilities for experimental work on sea forms.
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