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results 81-100 of 4114 item(s)  page 5 of 206 : ( <<  1  2  3  4  5  6  7  8  9  10  >> ) :: previous : next
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View of the Nisqually Glacier showing the south side of the mountain, Mount Rainier National Park, Washington,
81. View of the Nisqually Glacier showing the south side of the mountain, Mount Rainier National Park, Washington, ca. 1925.
Elm Leaf Beetle and Bag or Basket Worm : Elm Leaf Betle (Galerucella luteola (Muller) 1.Cluster of eggs;
82. Elm Leaf Beetle and Bag or Basket Worm : Elm Leaf Betle (Galerucella luteola (Muller) 1.Cluster of eggs; 1a. Side view of single egg,; 2. Recently hatched larva or grub; 3. Full grown larva or grub; 4. Pupa; 5. Overwintered beetle; 6. Fresh, brightly colored beetle; 7. Leaf showing eating of larvae or grubs and a few holes eaten by beetles, eggs in clusters, cast larval skins and full grown larvae; 8. Leaf nearly skeletonized by grubs of larvae and on it three cast larval skins; 9. Leaf showing holes eaten by beetles.
Bag or Basket Worm (Thyridopterys ephemeraformis Haworth): 10, Bag or larval case as it passes the winter; 11. Same as preceeding but cut open to show the pupal case and the eggs; 12. Several eggs; 13. Recently hatched larva; 14. Cases of young larvae on twit. Notice that the dark ones are on the dark bark and the light ones on the green bark; 14a. Leaf eaten by young larvae; 15. Older larvae in their bags which are ornamented with pieces of leaves, one is on the leaf, another hanging from the edge and a third dangling by a thread; 16. Full grown larva removed from its case; 17. Full grown larva walking with its case; 18. Male pupa; 19. Female moth; 20. Male moth with wings spread; 21. Female pupa; 22. Bag of male hanging from a leaf and with the empty pupal case protruding from its lower extremity.... The leaf in front of the bag shows the work of half grown larvae
Spongia oculata, showing the orifices and currents outwards. 2. Anastomosing horny substance of Spongia
83. Spongia oculata, showing the orifices and currents outwards.
2. Anastomosing horny substance of Spongia communis.
3. Siliceous spiculum of S. papillaris.
4. Of Scineria.
5. S.Pasons
6. Calcareous spiculum of S. compressus.
7. Transverse section of a canal of S. papillaria, showing the structure of the ova passing along the cana.
8. Ovum of S.panicea seen laterally--the cilie anterior
9 The same seen on the end, with a circle produced by the ciliary action.
10. Young Spongia papilaris
Taking the Giant Ray Different Views of the Giant Ray (Manta Manta), taken by the Hon. C. G. Conn,
84. Taking the Giant Ray
Different Views of the Giant Ray (Manta Manta), taken by the Hon. C. G. Conn, Member of the Tuna Club, in the Gulf of California.
1. Side view. 2. Crew of Mr. Conn's Yacht Trying to Land the Fish. 3. Ventral View, Showing Gills. 4. Mr. Conn. 5. Back View, Showing Claspers. 6. Side View
Shell of Spirula Peronii Lam: A, Outside view; B, showing last chamber and position of siphuncle; C,
85. Shell of Spirula Peronii Lam:
A, Outside view;
B, showing last chamber and position of siphuncle;
C, in seection showing the septa and course of siphuncle;
D, shwll broken to show the convexity of the inner side of the Septa;
E, portion of a septal neck
[Quahog Eggs]: Fig.1.--Mature egg ready for union with male cell. Fig.2.--Spermatozoa (male cells).
86. [Quahog Eggs]:
Fig.1.--Mature egg ready for union with male cell.
Fig.2.--Spermatozoa (male cells). Note length of tail and shape of head. No attempts were made to study the minute anatomy.
Fig.3.--Egg, twenty-five minutes after fecundation, showing the two polar cells (pc) and the faintly developed yolk love.
Fig.4.--Egg just previous to the first cleavage, showing large yolk lobe.
Fig.5.--The two-celled stage at the completion of the first cleavage, fifty minutes after fecundation. The larger cell contains the yolk lobe.
Figs. 6,7,8,9.--This series illustrates the process of cleavage in the egg during the change from the two-celled to the four-celled stage.
Fig.10.--The four-celled stage, one hundred and ten munites after fecundation. Side view.
Figs. 11,12.--The eight-celled stage, one hundred and forty-five minutes after fecundation.
Fig.13.--The sixteen-celled stae, one hundred and eighty-five munites after fecundation. Side view.
Fig.14.--The thirty-
Spongilla Flies: Climacia dictyona Needham: 1. Imago, lateral view; 2. Imago, dorsal view; 3. Larva,
87. Spongilla Flies: Climacia dictyona Needham: 1. Imago, lateral view; 2. Imago, dorsal view; 3. Larva, dorsal view; 4. Pupal cases, in situ; 5. One of the same....showing the hexagonal meshes of the outer covering.
Sisyra ambrata Needham: 6. Imago, lateral view; 7. Imago, dorsal view; 8. Two newly formed pupae, lateral and ventral views; 9. Macronychus glabratus Say (Coleoptera : Parnidae) : an associate of the sponge fly larvae, on submerged timbers; 10. Fresh-water sponges (Spongilla ? fragilis Leidy) in situ, witht he sponge fly larvae crawling about over them; 11. Two pupal cases of S. umbrata, showing the closely woven outer covering....
Valve of Unio in its Natural State, and the same with 'blanks' cut out from it. Blanks as cut; three
88. Valve of Unio in its Natural State, and the same with 'blanks' cut out from it. Blanks as cut; three upper figures showing inside, three lower showing outside with or or less of the epidermis. The same ground but not 'centered' or polished. The same centered. i.e. with the central depression made, but not the holes. The same with the holes drilled complete. A dozen buttons, as fastened on card for sale
Salmon-Colored Pearl, weighing 14 1/2 pearl grains, lying loose where it was formed in a shell, from
89. Salmon-Colored Pearl, weighing 14 1/2 pearl grains, lying loose where it was formed in a shell, from Linn Junction, Iowa. The pearl is nearly hemispherical, or 'button-shaped,' somewhat one sided, but perfect above. It occupied a depression at the posterior end of the right valve, and had caused a marked outgrowth or protuberance of the other valve.
B-Valve with the pearl removed, showing the depression where it had lain. C- The pearl itself taken out. D-Exterior view of the left valve, showing the protuberance corresponding to the pearl
Views of the under sides of the heads of adult females of the common sturgeon, showing the relative position
90. Views of the under sides of the heads of adult females of the common sturgeon, showing the relative position of the barbels and mouth, with its undistorted fleshy marginal processes as seen in the recently killed animal (fig.35-36); View of the under side of the head of an adult male of the common sturgeon, showing the aerolation on the under side of the snout in front of the mouth, the areolae being sensory tactile areas supplied by the fifth nerve.
Mackerel Purse-Seine Fishery Fig.1, Diagram showing the different sections of a purse-seine: A and
91. Mackerel Purse-Seine Fishery
Fig.1, Diagram showing the different sections of a purse-seine: A and J, arms of net; B and I, wings; C, D, K, and L, border of stout twine; F, bailing piece or bunt; E and G, sides; H, under
Fig.2. Diagram showing the form of a purse-seine when spread in the waterr
Right toothed forceps and cheliped of female lobster from lower side, showing periodic teeth, carpal
92. Right toothed forceps and cheliped of female lobster from lower side, showing periodic teeth, carpal ridge of lower lock hinge, represented as if seen through hinge-process (l.h.p.), breaking joint (x0 and interlock (s i and s 3) between first and third podomeres. This claw is locked when closed by means of the underlapping lock spine (lock sp) and underlapping tip of dactyl, indicated by arrow (Fig.1). Left cracker claw and cheliped of female from above, showing crushing turbecles, serial displaced teeth on margen of "hand" (up. ser. and l. ser.), carpal groove of upper lock hinge (u h groove), absorption area of fourth segment (Abs. a.), breaking plane (at x), reversed basal hinges, or inner ball (h ball), and outer cup (h socket); tendons (t.f. 1 and t.ex.I) of first joint, podobranchia (phr), gill separator (ep>) and proximal spur (ps) of clas (Fig.2). Base of great cheliped from below, disarticulated at secopnd joint to show interlocking mechanism of spines (s1 and s3) of first and third posomers. (Figs. 3 and 4)
Jaws of Right Whale Showing Whalebone (A); Lower Jaw of Sperm Whale Showing Teeth (B)
93. Jaws of Right Whale Showing Whalebone (A); Lower Jaw of Sperm Whale Showing Teeth (B)
Plans of Steam Trawler Zodiac Fig.1, cross-section in boiler room, showing location of boiler, coal-bunkers,
94. Plans of Steam Trawler Zodiac
Fig.1, cross-section in boiler room, showing location of boiler, coal-bunkers, etc.; Fig.2, Midship section, showing construction, ballast, etc.
Callinectes sapidus Ventral Surface of a Virgin Female, Showing the Narrow, Triangular Abdomen (fig.3);;
95. Callinectes sapidus
Ventral Surface of a Virgin Female, Showing the Narrow, Triangular Abdomen (fig.3);; Ventral Surface of an Ovigerous Female, Showing the Broad, Semi-Circular Abdomen (Fig.4)
Insects Affecting Oak : 1. Egg mass of Anisota senatoria Abb. & Sm., on underside of oak leaf; 2. Egg
96. Insects Affecting Oak : 1. Egg mass of Anisota senatoria Abb. & Sm., on underside of oak leaf; 2. Egg shells of same on partly eaten leaf; 3. Shrunken larvae of same infested by parasite on leaf stalks showing the characteristed feeding of the insect; 4. Nearly full grown larvae of same; 5. Recently hatched larvae feeding side by side and showing the skeletonizing of the earlier stages; 6. Male; 7. Female depositing eggs; 8. Full grown larva of Buck moth, Hemileuca maia Drury; 9. Male of Hemileuca maia Drury; 10. Egg mass of same; 11. Cacoecia fervidana Clem.; 12. Nest of same, composed of partly eaten, curled leaves; 13. Serica trociformis Burm. on leaf; 14. Same; 15. Two spotted tree hopper, Euchenopa binotata Say; 16. Another peculiar tree hopper, Crchasia galeata Fabr; 17. Another tree hopper, Thelia acuminatga Fabr.; 18 Dog day cicata or Harvest fly, Cicada tibicen Linn. in its resting position; 19. Acorn weevil, Balaninus nasicus Say, natural size; 20. Same
Insects Affecting Hard Pine : 1. Pitch mass of pitch twig moth Retinia constockiana Fern., with pupal
97. Insects Affecting Hard Pine : 1. Pitch mass of pitch twig moth Retinia constockiana Fern., with pupal shwll protruding therefrom in one case; the other shows old and recent pitch; 2. Pitch mass of pitch inhabiting midge, Diplosis resinicola Osten Sacken; 3. Shoot infested with Nantucket p9ine moth larva, Retinsia frustrana Scudd., showing the abortive growth; 4. Pitch pine needle gall fly, Diplosis pini-rigidae Pack., showing needles deformed by this insect; 4a. Work on needles of the prefious year; 5. Needles affected by the pine leaf miner, Gelechia pinifoliella Chamb., note the brown tips of the affected needles; 6. A pine sawfly larvae, Lophyrus abietis Harris in nabural position on the needles; below are stubs of eaten needles; 6a. Cocoon of same at base of pine needles; 7. Pine Chrysomela, Glyptoscelis pubescens Fabr...; 8. Pales weevil, Hylobius pales Herbst.; 9. Chrysobothris pusilla Bap. & Gory; 10. Chrysobothris florcola Gory; 11. Chrysobothris dentipes Germ.; 12, 13, and 14. Varieties of the light loving grapevine beetle, Anomala luciola Fabr., a species which is very abundant on hard pines; 15. Pilophorus crassipes Uhl....; 16. Magdalis alutacca Lec.; 17. Magdalis perforata Horn; 18. Lace winged fly, Chrysopa species; 18a. Cocoons of same on needles
Salmon Bay dock showing new piles, Seattle, December 31, 1934
98. Salmon Bay dock showing new piles, Seattle, December 31, 1934
Salmon Bay dock showing new surface, Seattle, December 31, 1934
99. Salmon Bay dock showing new surface, Seattle, December 31, 1934
Ridge off Enar Island showing erosion, Bikini Atoll, summer 1947
100. Ridge off Enar Island showing erosion, Bikini Atoll, summer 1947
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