FROM THE EDDYSTONE GliOUNDS TO START POINT. 435 



lime in whole sample, 47'26. Highest percentage occurs in V., which 

 contains 75 per cent. Geologically there is a wide separation between 

 samples 105 and 106 and the other samples taken from the westward. 

 A large percentage of the rock fragments in 105 and 106 is derived 

 from Archean rocks similar to those which constitute the Bolt pro- 

 montory. Trias is present, but flint, which has suffered considerable 

 surface decay, is also a prominent constituent. The rock fragments 

 in 105 II. are divisible as follows : — Archean (chiefly mica 

 schists), 7875 per cent.; Flint, 1274 per cent.; Trias, 8-51 per cent. 

 In 105 VII. 43 foraminifera were found in 019 grams (3 grains), or 

 226 per gram. Rotcdia heccarii and Miliolina seminidnm greatly pre- 

 dominated ; the complete list of species from 105 VI. and VII. being : 

 Rotcdia heccarii, Miliolina seminulum, Textidaria gramen, Trunccdidina 

 lohcitida. In all, four species. 



[106. Average grade of sample, 3-803. Percentage of carbonate of 

 lime in whole sample, 5277. Highest percentage occurs in IV., which 

 contains 7875 per cent. The rock constituents of this gravel are 

 similar to those of 105, but the proportions are different, the Archean 

 rocks are not so well represented, while flint is much more frequent. 

 The proportions in 106 II. are: Archean, 48-90 per cent.; Flint, 40-44 

 per cent.; Trias, 1066 per cent. Fifty-eight foraminifera were counted 

 in 0*26 grams (4 grains) of 106 VII., or 223 per gram. Again, as in 

 105, Rotcdia heccarii and Miliolina sc7ninuhim greatly predominate. 

 The species found in 106 VI. and VII. are as follows, arranged in 

 order of frequency : — Rotcdia heccarii, Miliolina semimdum, Truncatu- 

 lina lohcUula, Bulimina pupoicles, Miliolina hicornis, Textidaria gramen, 

 Textularia agglutinans, Discorhina rosacea. In all, eight species. — 

 E. H. W.] 



Shells were numerous in all hauls, for list see p. 438, In haul 20 

 stones were taken. 



As on the clean broken shell to the west of the Eddystone (XVI.), 

 to which ground the present one has many points of resemblance, the 

 fauna is comparatively poor, especially in the number of fixed species, 

 for the shells present, although numerous, are generally almost clean. 



Bitrroiving species. The typical burrowing species are Spcdangus 

 purpureiis, Pcctunculus glycimcris (abundant), Echinocyamus pusUhis, 

 Pulycjordius, sp., Eupolia curta, and a few Amphioxus lanceolatus. 



Fixed species. In the most typical hauls Sarcodictyon catenata, a few 

 encrusting polyzoa, an occasional specimen of Caryopliyllvi Smithii, 

 with perhaps one or two stray colonies of some hydroid, are all the 

 fixed species constantly met with. In haul 107 the hydroid Cam- 

 panularia flexuosa was fairly abundant on empty Fcctunculns glycimeris 

 shells, and in the same haul and in haul 105 Tuhicla'ba cornucopiac was 



