[ 4°2 ] 
Water, and is Food for Eels, until next Seafon, 
that it attains its Fly State, and then is Food for Fifii 
and Fowl. 
The Reafon of their being fo long in coming 
forth this Year was, the coki chilly Weather: Other 
Years, in a warm Seafon, in five Days they would 
have performed all their Functions, and difappeared. 
We have two other fmaller Kinds, that very much 
referable the former, but they come later by two 
or three Weeks : What is moft remarkable, the Males 
arc black, and live fcveral Days after the Females. 
ER RAT A. 
No. 491. p. 8. in the Tide of Art. IV. for D. Suarez, M. D. read 
Jacobum de Cajiro Sarmento , M. D. Item, the fame in the 
Contents. 
No. 493. p. 193. 1. 2. in the Title of Art. I. and in the Contents 
the fame, for July 15, read July 18 
Ibid. p. 213. May 13. for 33, 23. (the Height of the Barometer.) 
read 30, 23. and July 24. for 22, 66. read 29,66. 
No. 494. p. 342. 1 . j. for magn vafculum tenera , read vafculum, 
magis teuera, 
