*5924.5—No. 4 in **E.213.19—=No. 4 in **Adams 261.9 Barrow, Isaac. 1630-1677.
Lectiones optice & geometrice, in quibus phaenomenwn opticorum genuine rationes investigantur . . . et generalia curvarum linea- rum symptomata declarantur.
Londini, typis Gulielmi Godbid, & prostant venales apud Rober- tum Scott. 1674. 2v.in1. Diagrams. Sm. 4°.
[The second copy is kept on the Special Libraries Floor.]
x Vals aed Bhis card was printed at the Boston Public Library, November 18, 1908.
G8671 — Geometry. — Optics.