77;^ c O N T E N T S, 
V» A New and ExaSb Table ^ ColleBed from Z^- 
Veral ObJerVations, taken in four Vojages to 
Hudfon’s-Bay in North America, from Lon- 
don ; Shewing the Variation of the Magnetic al 
Needle j or Sea~Compafs, in the Tath-way to the 
Jaid Bay, according to the feVeral Latitudes a?id 
Longitudes from the Year xyii^ to 172 j, 
©j Mr, Chriftopher Middleton. 
VI. An Account of feVeral Experiments concerning 
the running of Water in Tipes^ as it is retarded 
by FriBion and intermix'd Air^ fome of which 
were made before the (J^yal Society on Thurfday 
the ^th o/May, 1726. Wuh a 'Defcriptmi of 
a new Machine^ whereby Tipes 7 nay be clear’d of 
Jir^ as the Water runsalong^ without Stand-Fipes^ 
or the help of any Hand. Fy the J. T, 
Defaguliers, LL. D. F. R. S. 
E JL R A T A. 
P AGE 51. line S. kge ^ i ^ane tartaru p. 0 . 1 * i* HL 
p. 71. 1 . i. dele lY, . . . 
i . 
I. Ce 
