PHILOSOPHICAL 
TRANSACTIONS. 
Mnnday ^ Feb, la. i66|. 
The Contents. 
4n Apcndix tQ the Dircd:ions for Seamen, bound for far voyages, 
of the judgment cf feme of the Englifh jijiroiiomers ^ tQuching 
the difference between trtps learned men , about an Obfervatim 
made of the firjl of the two late Comets. Of a Correfpondency, 
to he procured.fer the finding out of the^vxxt diflance of the Sun 
and Moon from theEarth.Of an Obfevdationmt longfime made in 
England ^/Saturn.^n Account offome Mercurial Obfervations^ 
made with a Barometer, and their Rejults. Some Obfervatiom 
of Vipers^ made by an Italian Philofopher. 
An Appendix to theDixtdiions for Seamen^ 
bound for far Voyager. 
Hereas it may be of good nk^hoihlSlaval 
and Philofopbical , to know, both how to 
found depths of the fea without a Line, 
and to fetch up water from any depth of 
the fame ^ the f ollowing waies have been 
contrived by Mr. Ho^^co perform both^ 
(which fliould have been added to the 
lately printed Directions for Seamen^^ii then, 
it could have been conveniently done.) 
X Firfi, 
