94 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
suggests that they may represent the excrement of fishes, and this 
idea is supported by their general uniformity of size and fusiform 
shape. 
Ciirrs over West WuitE Beacu. — These limestones, only two in 
number, are from the road leading down to West White Beach. This 
road is joined at right angles by the road to Murray Hill. 
Chemical. — Two analyses were made of rocks from 700 and 600 feet, 
and these contained 14.3 and 3.3 per cent of magnesium carbonate 
respectively. 
Calcium Magnesium 
Number. Height. Carbonate. Carbonate. 
365 700° 85.7 14.3 
373 600’ 96.7 3.3 
Microscopical. No. 365.—The rock is made up of fragments of 
organisms which for the most part are well preserved. The aragonite 
organism Halimeda has been, however, changed to calcite and the cavities 
in the rock are filled with the same mineral. 
Puospuate Hitt Roap. — This road starts just below the 800 feet 
contour inland from Flying Fish Cove, and at this point is joined by a 
road going south-east from Flying Fish Cove to the Waterfall. It pro- 
ceeds to Phosphate Hill along gently rising ground. 
Chemical. — The highest specimen, No. 815, contains 13 per cent of 
magnesium carbonate. Twenty feet lower, No. 816 yields 7.4 per cent, 
and No. 817, from a height of 780 feet, contains only 3 per cent of 
magnesium carbonate. 
Calcium Magnesium 
Number. Height. Carbonate. Carbonate. 
81d 820’ 87.0 13.0 
816 800’ 92.6 74 
817 780’ 97.0 3.0 
Microscopical. No. 815. arge opaque fragments 
set ily a semi-opaque matrix. Amphistegina is common, and the organisms 
as a whole appear to be unaltered. 
Sourneast Roap BETWEEN Fiy1ne Fish Cove anD THE WATERFALL. 
— This road starts from a point at 700 feet above Flying Fish Cove. It 
then rises to 900 feet, falling to 820 feet, again rising to 900 feet and 
falling to the south-east towards the Waterfall. Specimens, from No. 
709 to No. 700, were collected along this road. 
Chemical. — One limestone, No. 707, from the first slope nearest Fly- 
ing Fish Cove, is dolomitic, but the remaining nine specimens, collected 
