Some Experiments concerning the Impregnation of the Seeds of Plants, by James Logan, Esq; Communicated in a Letter from Him to Mr. Peter Collinson, F. R. S. J. Logan
Some Thoughts concerning the Sun and Moon, When Near the Horizon, Appearing Larger Than When Near the Zenith; Being Part of a Letter from James Logan, Esq; To Sir Hans Sloane, Bart. President of the Royal Society, &c. J. Logan
An Extract of a Letter from James Logan, Esq; To Sir Hans Sloane, Bart. R. S. Pr. concerning the Crooked and Angular Appearance of the Streaks, or Darts of Light'ning in Thunder-Storms J. Logan