Note 328 — THE CONCLUSION: COMPREHENDING A RETROSPECT OF THE LIFE OF DAVID RITTENHOUSE,

This Comet was observed by John Lukens, Esq. of Philadelphia, on the 20th of January, 1784. This respectable practical astronomer communicated his discovery of it to Dr. Rittenhouse the next day, on the evening of which, (“assisted by Mr. Lukens and Mr. Prior,”) he ascertained the then apparent place of this comet. Dr. Rittenhouse’s communication to the society, on this subject, gives also the apparent place of the comet on the 17th of February, being the last time the weather permitted him to see it: the result of his intermediate observations is also stated.