Harris, John · Montreal, Lovell Printing and Publishing Co. · leaf 212
rable. These disturbances, being proportional tothe disturbing masses, may then be used as measures of the latter,just as the movement of the pith-ball in the balance of torsion sup-plies a measure of the i^hysical forces to which that instrument isapplied. Enckes comet near its perihelion passes… … bielas comet. 33 manifested in the comets motion, which being observed supplies ameasure of the planets mass. This combination of the motions of the planet and comet took placeunder very favourable circumstances, on the occasion of the peri-helion passage of the comet in 1838, the result of which,…
Astronomy
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