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Two species of Caprellidae
A, Phtisica marina, a species which retains the fourth and fifth pairs of thoracic limbs (prp', prp')
B, Caprella linearis, in which these limbs are represented only by the gills (br)
a', Antennule; a', antenna; abd, vestigial abdomen; gn, gnathopods; m, brood-pouch; IV, V, forth and fifth thoracic somites
Gen. Villa, the Mexican Revolutionary Leader (in white hat), on Board a Troop Train, ordering all ablebodies men to the front and searching wounded for ammunition, of which his forces are running short. Note the case of Alaska Canned Salmon, which is a staple article of diet among the Mexican soldiers.
Bliss No. 1K Semi-Automatic Water Tester.--A machine for testing round or square cans from 1 1/2 to 6 3/4 inches in diamter by 1 1/2 to 6 inches in length, or the equivalent. Adapted for sanitary cans. It may also be arranged for larger work. Some of the different style cans, for the testing of which it is used, are shown in the illustration. The output, which depends on the size of can and the expertness of the operator, is from 4,000 to 10,000 cans a day.
Solea vulgaris : Body cavity of the male Common Sole after all the viscera have been removed except the testes and kidneys, which are left in situ.... The wooden rod passes through the anus, the black bristle passes into the urinary bladder, which lies beneath the cords containing the testicular ducts
Solea vulgaris : Body cavity of the female Common Sole after all the viscera have been removed except the ovary and kidneys, which are lift in situ. The wooden rod passes through the anus, the blue probe pass through the external aperture of the common oviduct up into the left ovary, the black bristle passes into the urinary bladder which lies beneath the oviduct
These scallops show two or three lines which indicate temporarily arrested growth. A careful distinction should be made between such lines and the annual growth line, which is caused by the non-growth of the scallop during the winter months, appearing about May 1
Scallops over one year old, as shown by the formation of the annual growth line, which is caused by cessation of growth during the winter months. Any scallop which does not possess this annual growth line is less than one year old, and is a 'seed' scallop. The present legal definition of a 'seed' scallop is based on the annual growth line, as its absence indicates that the animal has not as yet reached its spawning season, and is, therefor, an immature animal
Spat boxes, lowered from the raft at Monomoy Point, after having been down for the summer. Notice the quantity of barnacles and silver shells (Anomia) which have collected on the outside. Inside, these boxes heavy sets of clams and quahaugs were obtained, while on the outside were found numbers of young scallops, which were removed before the photograph was taken
Nassa obsoleta (the little black winkle of the tide flats) devouring a scallop. These little scavengers swarm over the scallop. Occasionally one is active enough to get between the valves, forming a wedge which permits the entrance of others, which quickly consume the scallop. Owing to the alertness of the scallop and its different habitat (Nassa usually being found on the tide flats) little damage is done
Cryptodromia pileifora, with the commensal sponge beneath which it shelters; seen from the under surface.... The last two pairs of legs, by which the sponge-cap is held in position, are not visible in this view
Salmon Rack at Lake Creek, Ore. A tributary of the Siuslaw River. Length 160 feet. One of the new style racks which the Oregon Fish Warden has caused to be constructed across several of the coast streams and all of which have been successful
Scallops over one year old, as shown by the formation of the annual growth line, which is caused by cessation of growth during the winter months. Any scallop which does not possess this annual growth line is less than one year old, and is a 'seed' scallop
Local distribution of the 'smooth' or nothern scallop, Pecten magellanicus, which ranges, on our coast, from Labrador to (off) Cape Hatteras, but which is said to be 'rare and local south of Cape Cod'
Oyster Park at Tanna. General view, showing bamboo collectors, arranged in parallel lines. The older collectors, which are seen to bear large oysters, have remained in position somewhat over two years; the newer ones, some of which are indicated by asteri
Wire cages in which molting crabs were confined for observation. The cages rested on the bottom..., each being raised and lowered by means of an individual wire, the upper end of which was attached to a post at a point above high-water mark.
One valve of a three-ridge (Q.Plicata), showing the cavity from which an embedded 58-grain turtleback pearl was taken, which when peeled produced a fine 20-grain high-button
Siphostoma fuscum (The Pipe-Fish).
fig. 19Young embryo, in which the tail is still archicereal and the dorsal and pectoral fins are just developing. fig.20 a still younger stage, in which the tail is just beginning to grow out. fig.21 an older stage, i
Spraying oil on an acid swamp in which fish can not live but which supports Anopheles larvae
Bridal Veil Falls and Three Graces, Yosemite
The Yosemite Valley is nearly in the center of the state of California north and south, and just midway between the east and west basins of the Sierra, here a little over 70 miles wide. The valley is anearly level area, about six miles in length, and from half a mile to a mile in width, sunken almost a mile in perpendicular depth below the general level of the region. It may be roughly likened to a gigantic trough holowed out in the mountains, nearly at right angle to their regular trend. Down the many side gulches or canyons descend streams, forks of the Merced, coming down the steeps in a series of stupendous waterfalls. On the side of Cathedral Rock, which faces the entrance of Merced River into the valley, Bridal Veil Creek falls over a precipice 630 feet high and then forms a number of smaller cascades that together make a descent of 300 feet more. The fall is very beautiful. In its leaps the column of water is swayed hither and thither by the wind, and nearly dissolved into spray, which makes the fanciful name very appropriate. The Yosemite Valley Fall has a clear leap of 1,500 feet from the top of the cliff.
Loggers sitting in dugout canoe which is used for transportation to and from work, unidentified logging camp, Washington, n.d.
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