Page 324 - 89 history of astronomy_opt

lem. Bessel had intended to try, but a fatal
illness overtook him.
Adams first recalculated all known causes
of disturbance, using the latest determina-
tions of the planetary masses. Still the er-
rors were nearly as great as ever. He could
now, however, use these errors as being ac-
tually due to the perturbations produced by
the unknown planet.
324