Logarithms.
Gunter, Edmund. 1581-1626. **5089a.71 Works: containing the description and use of the sector, cross-staff, bow, quadrant, and other in struments. With a canon of artificial sines and tangents to a radius of 10 0000 parts, and the logarithms from an unite to 10.000, [etc]. Added, The description and use of another sector and quadrant invented by Sam. Foster. 5th ed., cor- (Continued)