Praises JH's work on double star orbits. Translated 'Fisica Celeste' [JH's Physical Astronomy?] for use of University of Padua. Receives fourth volume of R.S.P.T. of R.S.L. R.A.S. awards GS for astronomical work. Wants to purchase a Barlow telescope for Padua Observatory. Observes Biela's Comet at Rome Observatory. Makes study of perturbations in the orbit of Jupiter.