Ordering and Use
Search results for
Refine your search
Search all Collections
page 1 of 2 : (
add to favorites
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
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
Principal enemy of the adult quahaug is the common winkle or cockle (Lunatia duplicata or heros), pictured at the right and left in the illustration. In the corners are quahaug shells, through which a clean countersunk hole has been bored by this mollusk at the umbo. In the center is a starfish, the great pest of the oyster beds, and on rare occasions an enemy of the quahaugs.
Growth of a quahaug in the raft boxes, Monomoy Point, from one and one-half to five and one-half years old, is shown with the corresponding increase in volume. Starting with 1 bushel of one and one-half-year-old quahaugs, there would result at the age of five and one-half years approximately 19 bushels. The figures on the left give the size of the quahaug...; those on the right represent the volume in bushels corresponding to the various years.
Quahaug of Puget Sound, Saxidomus nuttalli
Quahaug or Little-necked Clam, Venus mercenaria
Claw Quahaug Rake.
--This rake varies greatly in size and length. Its use is chiefly confined to Nantucket. The general style has a handle 6 feet long, while the iron part, in the form of a claw or talon, with prongs 1 inch apart, is 10 inches wide. A heavier rake, as here shown, us sometimes used in the deeper water.
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
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, 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 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
Photograph taken from a model in the Museum of Natural History in New York. The different portions of the anatomy are indicated by the labels. The sympol A. A. and P. A. refer to the anterior and posterior adductor muscles, which hold the two valves of the shell together. The posterior part of the animal is represented by the siphon, which consists of two parts, an incurrent and an excurrent, through which the water enters and leaves the quahaug in the directions indicated by the arrows. In the mantle chamber the food is filtered from the water by the gills, which are here shown cut off near their base.
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 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.
Map showing the distribution of the quahaug in Massachusetts. The black areas indicate ground where quahaugs are found.
Three-month-old spat upon stones, which were gathered beneath Chequesset Inn wharf, Wellfleet
Figs. 1-20 illustrate the growth of the seed oysters caught on small stones. Figs. 1-10 show three-month-old oysters attached to living snails (littorina littorea). Figs. 11-14 show the oysters of the same age attached to small stones. Figs. 15-18 show oysters one and one-half years old attached to small peggles, while Figs. 19-20 show two and one-quarter-year-old oysters attached in the same fashion. Fig.16 gives a peculiar illustration of the method of attachment. The young oyster has formed an attachment to a second pebble towards its free end at some distance from the first, indicating that the mantle, even at the age of one year, retains the power of secreting a fixative.
Oyster spat, one month old, on the shells of the experimental spat collectors located in Wellfleet Bay, 1908. Various shells, such as oyster, scallop, razor clam, clam, quahaut, silver or jingle shells can be used for spat collection
Oyster seed, mostly two-year olds, attached to the wooden piles and the stones beneath Chequesset Inn wharf, Wellfleet, Mass. The abundance of the natural set on such objects indicates that successful spat collecting can be carried out in this locality. During severe winters the mortality is heavy, owing to the exposure between the tide lines; but these oysters have weathered two ordinary winters.
Near view of oyster shells on the gravel bar in Herring River. The set is about three months old. Notice the clean appearance of the shells.
add to favorites
page 1 of 2 : (
Change display settings
Make a Gift
^ to top ^
University of Washington Libraries
Subscribe to Updates