THE DEPOSITS OF THE SEA-BOTTOM. 



Station 117; 6134 per ct. CaC0 3 ; far the greater part Globigerinae; many rotaliform Foramini- 

 fera; some Lagenae and Miliolinae. 



Station 118; 43-67 per ct. CaC0 3 ; far the greater part Globigerinae; some rotaliform Foramini- 

 fera; a few Lagenoe and Miliolinae. 



Station 119; 55-81 per ct CaC0 3 ; far the greater part Globigerinae; a few rotaliform Foramini- 

 fera, Miliolinae, and Lagenae. 



Station 120; 28-59 per ct. CaC0 3 ; almost exclusively Globigerinae; a few rotaliform Foramini- 

 fera; one Miliolina, and one Lagena. 



Station 124; 0-72 per ct. CaC0 3 ; exclusively Globigerinae. 



Station 125; 10-31 per ct CaC0 3 ; exclusively Globigerinae. 



Station 126; 0-26 per ct. CaC0 3 ; exclusively Globigerinae. 



Station 127; the percentage .not determined, rather small; chiefly rotaliform Foraminifera ; 

 some Globigerinae, Nonioninae, Textulariae, Lagenae, and several other forms. 



Station 128; 5-22 per ct. CaC0 3 ; a few Globigerinae and rotaliform Foraminifera. 



Station 129; 48-27 per ct. CaC0 3 ; far the greater part rotaliform Foraminifera; a few Globigerinae. 



Station 138; 5-48 per ct. CaC0 3 ; about an equal quantity of Globigerinae and rotaliform For- 

 aminifera. 



Station 139; 7-24 per ct. CaC0 3 ; chiefly rotaliform Foraminifera; many Globigerinae; one Lagena. 



Station 140; 9-59 per ct. CaC0 3 ; chiefly Globigerinae; some rotaliform Foraminifera. 



Station 141; 4-70 per ct CaC0 3 ; more than the half rotaliform Foraminifera; many Globigerinae 

 and Nonioninae; a few Lagenae and other forms. 



Station 143; 6-14 per ct. CaC0 3 ; far the greater part Globigerinae; one Miliolina, one Biloculina, 

 and one rotaliform Foraminifer. 



As is shown by the table it is only in a smaller number of specimens, that is to say such as 

 only contain very small quantities of carbonate of lime, that no Foraminifera have been found; in 

 some of those specimens we shall be justified in supposing them to be quite wanting; in the others 

 they must be found in only very small quantity. In far the greater number of the specimens the 

 genus Globigerina is absolutely predominant over the other forms; in most instances 50 — 100 Globi- 

 gerinae may he counted, before other Foraminifera are met with; especially in the specimens with the 

 highest percentage of carbonate of lime, this genus is particularly predominant over the others, and 

 accordingly the appellation of Globigerina clay is quite suitable in all these cases; in the Transition 

 clay and the Gray deep-sea clay, on the other hand, some of the other genera may, in some instances, 

 make out the predominant portion of the Foraminifera. The Globigerinae of the different specimens 

 are only little deviating from each other; almost all of them belong, I think, to the same species, or, 

 at any rate, to very nearly related species; most of them are rather small, commonly 0-2 — o-3 mm . In 

 most cases, however, some of them rise to nearly o"5 mm , and in some specimens most or almost all of 

 them are of that size; in this case they are also mostly very dark and opaque, and, when viewed in 

 incident light, brownish; they are saturated with limonite, which is often found in so large a quantity, 

 that, when the lime has been resolved in diluted hydrochloric acid, it often completely gives the form 



