ll of cliffs, they looked just as black.

If the variable word control, controul, or controll, is from con and troul or troll, it should be spelled with ll, by Rule 7th, and retain the ll by Rule 6th.

In considering this vexatious question about the duplication of l, I was at first inclined to admit that, whenever final l has become single in English by dropping the second l of a foreign root, the word shall resume the ll in all derivatives formed from it by adding a termination beginning with a vowel; as, beryllus, beryl, berylline.