78 TRAVELS IN 
a-breaft of fort Picolata; where, being defirous of 
gaining yet farther intelligence, I landed; but, to 
my difappointment, found the fort difmantled and 
deferted. This fortrefs is very ancient, and was built 
by the Spaniards. It is a fquare tower, thirty feet 
high, inverted with a high wall, without bartions, 
about breaft high, pierced with loop holes and fur- 
rounded with a deep ditch. The upper ftory is 
open on each fide, with battlements* fupporting a 
cupola or roof: thefe battlements were formerly 
mounted with eight four pounders, two on each 
fide. 
The works are conrtrudted with hewn rtone, ce- 
mented with lime. The rtone was cut out of quar- 
ries on St. Anaftatius Ifland, oppofite St. Auguf- 
tine : it is of a pale reddifh brick colour* and a tef- 
taceous composition, confiding of frnall fragments of 
fea-fhells and fine fand. It is well adapted to the 
conftructing of fortifications. It lies in horizontal 
martes in the quarry, and conftitutes the foundation 
of that ifland. The caftle at St. Auguftine, and 
moft of the buildings of the town, are of this rtone. 
Leaving Picolata, I continued to afcend the ri- 
ver. I obferved this day, during my ptogrefs up 
the river, incredible numbers of frnall flying infedfcs, 
of the genus termed by naturalifts Ephemera, con- 
tinually emerging from the fhallow water near fhore* 
fome of them immediately taking their flight to 
the land, whilft myriads crept up the grafs and 
herbage, where remaining for a fhort time, as they" 
acquired diffident ftrength, they took their flight 
alfo, following their kindred to the main land* 
This refurredtion from the deep, if I may fo ex- 
prefs it, commences early in the morning, and ceafes 
after the fun is up. At evening they are feen in 
clouds 
