81 



3. Twenty to forty feet from surface. — THe stratigraphical and 

 lithological features of this sample correspond almost exactly 

 with the preceding, having, perhaps, a slightly larger pro- 

 portion of micaceous particles. Residuum very small in 

 quantity. Under the glass this is shown to consist mainly o£ 

 small flakes of the matrix not dissolved by the washing, and a 

 considerable number of fragments made up of very minute 

 crystalline particles. The majority of these are apparently 

 aggregations of crystals ; but scattered amongst the material 

 are a few objects somewhat similar in appearance to these 

 crystalline bodies, because built up of like particles, but of 

 organic origin. These coarsely-arenaceous Foraminifera, of 

 which there are seven species recorded from this washing,. 

 make up nearly the whole of the fossil contents from this^ 

 depth. The remainder consist of one or two very minute 

 fragments of carbonaceous matter and a few other fragmentary 

 objects, probably of organic origin, but too imperfect to show 

 their zoological relationships. 



4. Forty to fifty feet from surface. — The general features of 

 this sample resemble very closely the preceding, being evidently 

 a continuation of the same bed of argillaceous silt. Seven 

 species of Foraminifera occur, none of which are peculiar to 

 the geological horizon. This sample is, however, of some 

 interest in supplying a single valve of Lingula and two other- 

 fragments, which appear to belong to the same species. 

 It is so small a shell as to require a magnifying glass tO' 

 determine its character. The only other objects worty of note 

 are a detached cell of a polyzoan (the only indication of 

 polyzoanal life found in the entire section), small fragments 

 of drift-wood, a (?) seed case, and a few pyritous casts which 

 are globular or cylindrical in shape, the latter are straight, 

 serpentine, and rarely bifurcating. 



5. Fifty to fifty -five feet from surface. — Lithological character 

 similar to preceding. The amount of material operated upon 

 from this depth was very small, but moderately rich in its 

 foraminiferal contents. These latter belong to eleven species 

 under seven genera. A trace of molluscan remains was ob- 

 served in the form of one or two small shell fragments ; also 

 one Entomostracan, several seed or egg cases of a brown colour,. 

 and small fragments of vegetable matter. 



6. One hundred to two hundred feet from the surface. — The 

 material from this depth placed at my disposal consisted en- 

 tirely of the casts of a molluscan bivalve, about the size of a 

 cockle shell. One or two of the least perfect of these casts 

 were dissolved in water, and these left a rather larger propor- 

 tion of residuum than usual in these washings, in consequence 



