Note 3 — PART I.
Reading edition
It will immediately occur to any grammarian that there is a slight difference between this and the common division into mutes and liquids, by the letter m being removed from the class of liquids to that of mutes. This is not an oversight, but an intentional arrangement; as the accidents of the letter m are, in Gaelic, the same with those of the mute, not of the liquid consonants. For a like reason, s is included in the class of liquids.