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Plan of the Powder Hole, Monomoy Point, Mass., showing the shellfish experiments and laboratory of the
1. Plan of the Powder Hole, Monomoy Point, Mass., showing the shellfish experiments and laboratory of the Massachusetts Department of Fisheries and Game. The harbor, represented by the dotted lines, is bounded on the north and west by a clam flat of coarse sand. The channel connecting the Powder Hole with the ocean passes across this flat. The deepest water, 18 feet, is found near the clam flat, while in the eastern and southern parts of the harbor the shallow water is filled with a thick growth of eelgrass.
(1) Raft; (2) car in which egg lobsters were confined for hatching purposes; (3) scallop pen; (4) scallop pen; (5) scllop pen; (6) winter rack for suspending scallop baskets and quahaug boxes under water as a protection from the ice; (7) quahaug bed No.3; (8) quahaug bed no.5; (9) quahaug bed no. 7; (10) quahaug bed No.6; (11) quahaug bed No.8; (12) clam bed No.19; (13) sea clam bed; (14) clam bed No.18; (15) clam bed No.3; (16) clam bed No. 2; (17) clam bed No. 99; (18) clam bed N
Sea mussels growing on a wharf pile at Vineyard Haven, marthas Vineyard, Mass. Closely associated with
2. Sea mussels growing on a wharf pile at Vineyard Haven, marthas Vineyard, Mass. Closely associated with the shellfish are hydroids, sea anemonies, sea pork, and sea squirts. Two small fish, cunners, are in the act of browsing on the shellfish. A jellyfish and squid are shown to the right of the colony.
Photograph of a model on exhibit at the American Museum of Natural History, New York
Sea mussels growing on a wharf pile at Vineyard Haven, marthas Vineyard, Mass. Closely associated with
3. Sea mussels growing on a wharf pile at Vineyard Haven, marthas Vineyard, Mass. Closely associated with the shellfish are hydroids, sea anemonies, sea pork, and sea squirts. Two small fish, cunners, are in the act of browsing on the shellfish. A jellyfish
Students working with shellfish at Friday Harbor, University of Washington, ca. 1930
4. Students working with shellfish at Friday Harbor, University of Washington, ca. 1930
Pages from the Sea's story: Fossil shells and corals once at the bottom of the sea
5. Pages from the Sea's story: Fossil shells and corals once at the bottom of the sea
Quahaug house of the firm of A. D. Davis & Co. at Wellfleet in 1907, one of the receiving agencies for
6. Quahaug house of the firm of A. D. Davis & Co. at Wellfleet in 1907, one of the receiving agencies for the Wellfleet fishermen. A typical quahaug boat of Wellfleet is snown, waiting to unload its cargo of quahaugs. The long handles of the rakes can be seen on the deck of the boat
Scene along the river front at Fairhaven, showing a quahaug shanty and several skiffs, which are used
7. Scene along the river front at Fairhaven, showing a quahaug shanty and several skiffs, which are used in raking the small seed quahaugs from the Acushnet River. Owing to the pollution within the restricted area, quahaugs can only be taken from this river for transplanting purposes. Since writing this report, an act was passed in 1911 whereby the city of New Bedford and the town of Fairhaven by a common board govern the taking of quahaugs from this section by licenses and by restrictions as to selling and transplanting
Quahaugs from an experimental bed at Monomoy Point, showing two years' growth. The two notches or file
8. Quahaugs from an experimental bed at Monomoy Point, showing two years' growth. The two notches or file marks on the shells indicate the growth per year.... These quahaugs show rapid growth, having gained nearly 1 inch in length per year.
[Quahots]: These two sizes illustrate the sti ulating effect on growth of current, which acts as a
9. [Quahots]:
These two sizes illustrate the sti ulating effect on growth of current, which acts as a food carrier. In each bet quahaugs of the same size were planted and allowed to remain for three years. The larger quahaugs were planted in a box on the raft, where the circulation of water was good; the smaller in the southeastern corner of the Powder Hole, not 75 yards from the raft, in shallow water among thick eelgrass, which shut off all circulation.
One of the boxes suspended from the raft at Monomoy Point when taken up at the end of the summer. The
10. One of the boxes suspended from the raft at Monomoy Point when taken up at the end of the summer. The quahaugs which have been growing in the box are shown in front. On careful examination the notches in the shaft, marking growth for three years, can be seen. The box and rope are covered with barnacles and silver shells (Anomia), while the wood has been perforated by a boring mollusk, the ship-worm (Toredo). This illustrates an easy method of obtaining the rate of growth of the quahaug.
Small grants for the bedding of the catch at Wellfleet. Under the Acts of 1904, the inhabitants of Eastham,
11. Small grants for the bedding of the catch at Wellfleet. Under the Acts of 1904, the inhabitants of Eastham, Orleans and Wellfleet have the privilege of staking off not over 75 feet square of flat for bedding the catch, when the prices are low. During dull seasons many bushels of "blunts" are planted until the price becomes satisfactory. This may be termed the first step toward quahaug culture. Note the quahaugs in the center, which are sill uncovered.
Quahaug farm of Z. A. Howes at Wellfleet. Several hundred bushels of seed quahaugs are planted between
12. Quahaug farm of Z. A. Howes at Wellfleet. Several hundred bushels of seed quahaugs are planted between the tide lines. The boundaries of the grant are market with stakes, made of slender salpings topped with brush. The man in the foreground is examining the growth of the quahaugs
Exterior of the laboratory at Wellfleet, showing the hatching tubs. This building, formerly an oyster
13. 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.
Diagram of the method used in experimental hatching of quahaug eggs and rearing of the young larvae at
14. 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.
Map of Wellfleet Bay showing the location between the tide lines of quahaug growth experiments 101 to
15. Map of Wellfleet Bay showing the location between the tide lines of quahaug growth experiments 101 to 185. Many acres of flats are exposed, owing to the large rise and fall of the tide, which is about 10 3/4 feet. The average increase in volume for 84 betw in one year was 185 per cent., or over 2 3/4 bushels for every bushel planted.
Opening House J. J. Brenner Co.
16. Opening House J. J. Brenner Co.
Heap of shells from mussels which have been pickled for the New York market. The shells are used as cultch
17. Heap of shells from mussels which have been pickled for the New York market. The shells are used as cultch for seed oysters
Water telescope in use
18. Water telescope in use
Bed of sea mussels in Menensha Pond, Marthas Vineyard, Mass., exposed at low tide. Each square yard of
19. Bed of sea mussels in Menensha Pond, Marthas Vineyard, Mass., exposed at low tide. Each square yard of surface is covered with more than a bushel of the shellfish
Shellfish Scows at Leclaire, Iowa, loaded with Mussels About to be Towed Down the Mississippi by Steamer
20. Shellfish
Scows at Leclaire, Iowa, loaded with Mussels About to be Towed Down the Mississippi by Steamer
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