kept with the "Register of Sweeps." Observations and remarks on various subjects will often be found as memorandums, made during or at the end of a sweep, to which the general index may serve as a direction as for instance under the head of zodiacal lights the index points out twelve different sweeps in which they were observed.
N.B.—Let it be remembered that the memorandums in the transcript of the sweeps between |||| are mine, and must be confided in accordingly.
At the end of the Catalogue of Nebulæ I have put a list of memorandums to the catalogue of omitted stars, and index to Flamsteed's Observations, contained in his second vol. They are properly not all to be called errata, but mem. of errors, which could only be solved by later observations, &c., &c. ***** All your father's papers from the Phil. Trans., which are bound in five volumes, and in which I have carried all corrections (in the Catalogues of Nebulæ) I could find, I must keep a little longer, but they shall come safe to your hands along with Bode's and Wollaston's catalogues, when my eyes have robbed me of the pleasure of reading for which misfortune I am in daily fear.
I am, dear nephew,
Yours affectionately,
C. Herschel.
