332 APPENDIX. 
A 
DESCRIP TION 
O F A 
SEA-GAGE, 
Wherewith to Meafurc unfathomable 
Depths of the Sea. 
I. N my firfl: Volume mdcT Experiment 
I LXXXIX. p. 205>, I propofed a Me- 
thod for finding out the Depth of the 
Sea at unfathomable Depths ; which Method 
the ingenious Dr. Defagulkrs put in praftice 
before the Royal Society, with a Machine 
which he contrived ; the Defeription of 
which he has given in the Philofophicd 
TranfaEiions^'i^wvnhzx: 405. I (hall here more 
particularly deferibe how to prepare and gra- 
duate this Sea-Gage. 
2. Suppofe 
