66 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
The two other holes bored in the reef, one just below the arsenal, and 
the other opposite the custom-house and near the mouth of the river, 
show a succession of sands, shells, and clays, but there is apparently no 
Fine 
Sand 
Shorp Mit 
алате 
Shells 
Rock in 
КАА 
Dark 
Sand 
Mottled 
clay 
Yellow 
Clay 
Gre 
Sora 
Reck 
Shells and 
Loose Stones 
Sharp 
Sand 
DADA X ns BORIN ê NS ge 
Bann. ne TH EE 
2 Le Sand sror2e re e f ‚ Mor fue бун 
3 Metres ү 
2 
7 Rock 
Rock 
ووو‎ | 
— Frater 
Rock 
Sharp 
White Sand 
Shells 
Grey Sand 
Rockin 
preces, 
Dark 
Sand 
Mottled 
Clay 
Yellow 
Clay 
Grey 
Sand 
white 
Sand 
Fio. 34. Records 
and locations of borings made by Sir John Hawkshaw in the 
Pernambuco reef. 
regular sequence in the order of these beds, as will be seen by the accom- 
panying cuts copied from the map forming a part of Sir John Hawkshaw’s 
report. 
