8o 



THE DEPOSITS OF THE SEA-BOTTOM. 



Station 

 Station 

 Station 

 Station 

 Radiolaria. 



Station 

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 Station 

 Station 

 Station 

 Station 

 Station 

 Station 

 Station 

 Station 

 Station 

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102; a few Sponge spicules, and Radiolaria; some circnlar Diatoms. 



103; af few Sponge spicules, Radiolaria, and circnlar and attached Diatoms. 



104; some Sponge spicules, and circular Diatoms, a few oblong Diatoms. 



105; some Sponge spicules, and circnlar Diatoms, a few oblong Diatoms; very few 



106 

 107 

 no 

 in 

 112 



"3 

 "5 

 116 



117 

 119 

 120 

 124 



125 

 126 



127 



128 



129 



138 



J 39 

 140 



141 



H3 



a few Sponge spicules, and circular and attached Diatoms; one Radiolarian. 



a few Sponge spicules, and circtdar and attached Diatoms. 



some Sponge spicules, and circular and attached Diatoms; a few Radiolaria. 



a few Sponge spicules, and circular Diatoms. 



a few Sponge spicules. 



some Sponge spicules; a few Radiolaria, and circular Diatoms. 



very few Sponge, spicules and Diatoms. 



some Sponge spicules; a few Radiolaria and Diatoms. 



some Sponge spicules; a few Radiolaria; very few Diatoms. 



some Sponge spicules and Diatoms; a few larger and smaller Radiolaria. 



a few Sponge spicides; very few Radiolaria and Diatoms. 



a few Sponge spicules. 



very few Sponge spicules. 



some Sponge spicules; a few Diatoms. 



no siliceous organisms. 



numerous Sponge spicules; a few circular and attached^ Diatoms. 



numerous Sponge spicules; a few Radiolaria. 



numerous Sponge spicules ; a few Radiolaria and Diatoms. 



numerous Sponge spicules; some Diatoms; a few larger Radiolaria. 



a few Sponge spicules; very few Diatoms; one single Radiolarian. 



some Sponge spicules; a few Radiolaria; very few Diatoms. 



some Sponge spicules; a few Radiolaria and Diatoms. 



The siliceous organisms of the specimens are rather unequally divided in the different sizes 

 of grains. In all the specimens where Sponge spicules have been found, they have occurred among 

 the smallest particles, under o-o5 mm ; in more than half the cases they are also found among the par- 

 ticles 0-5 — o - 05 mm , and in about half the specimens besides they are found in the coarsest part of the 

 specimen, the particles over o-5 mm . It is, of course, more or less casual, whether a Sponge spicule 

 will pass through the sieve; if the sifting be continued for a sufficiently long time, almost all of them 

 may pass, with the exception of the branched ones, and those united to larger nets. The Radiolaria 

 have chiefly been found among the particles 0-05— o-o2 mm ; in the finer part they almost only occur as 

 fragments, and among the ingredients 0-5 — 0-05""" almost only one single form is found, which is, on 

 the other hand, of very frequent occurrence in the specimens, and may be seen in the sand as small, 

 snow-white grains with the naked eye or with a magnifying glass; under the microscope it is seen 

 to be oblong, flattened, with an impression in one side; it is very often met with in the sand pre- 



