^{page 500 note *} The reason for this, of course, is that

^{page 501 note *} It would have been well to make clear here that every term of the final expansion of contains one and only one second differential-coefficient.

^{page 510 note *} Or if f _n be not involved in the φ _n neither f _n nor f _n-1 involved in φ _n-1, and so on.

^{page 510 note †} Cambridge Math. Journ, iv. (1843), pp. 20–28.Google Scholar

^{page 510 note ‡} Archiv d. Math. u. Phys., x. (1847), pp. 417–421.Google Scholar

^{page 515 note *} Viewing R and S as matrices of which the conjugates are and we have as an equivalent of this