TY  - JOUR
T1  - A New Method of Improving and Perfecting Catadioptrical Telescopes, by Forming the Speculums of Glass Instead of Metal. By Caleb Smith
JF  - Philosophical Transactions (1683-1775)
VL  - 41
SP  - 326
EP  - 340
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1739.0050
M3  - doi:10.1098/rstl.1739.0050
AU  - Smith, C.
ER  -