TY  - JOUR
T1  - Observations of the Transit of Mercury over the Disc of the Sun; to which Is Added, an Investigation of the Causes which Often Prevent the Proper Action of Mirrors. 
JF  - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843)
VL  - 1
SP  - 112
EP  - 114
PY  - 1800/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1800.0068
M3  - doi:10.1098/rspl.1800.0068
AU  - Herschel, W.
ER  -