When the enemy is upon you, just "m-m-b-l-m-b-l-m."  From The Judge, 1917.    See Webster's Dictionary of Improbable Words: All-Consonant and All-Vowel Words.

"And yet—" [a very long dash followed by an isosceles triangle of asterisks].  From Possessed by Cleveland Moffett, 1920.

For fermented, read permeated.  For desire, read devise.  For moley, read motley.  "Two or three errors" [spoiler -- it's three] from The Michigan Journal of Education, 1860.

From Hoenshel's Advanced Grammar, 1899.

Here's a spicy novel from 1873.

Balmy, not haling; ever, not even; disperse, not dispense; thy, not the.  Corrections from The Kappa Alpha Journal, 1901.

A secret message revealed by overlaying a "grille."  From Cosmopolitan, 1904.

Here are some interpuncts translated by Isabel F. Hapgood for "It Is Enough" by Iván Turgénieff, 1915.

Here's the figure (as well as the all-consonant word) for a cartoonish smooch.  From Fliegende Blätter, 1938.   See Webster's Dictionary of Improbable Words: All-Consonant and All-Vowel Words.

Words actually used in Fred Flintsone's vocabulary.  From The Boston Edge, 1986, via Jonathan Caws-Elwitt.

If, in the language of flowers, friendship is a four-leaf clover, love is a daisy, and courtship is a rose, then divorce is an onion, marriage is a cabbage, and alimony is a lemon.  From The Judge, 1913.

For fruit read forest, but for forest read first.  For growth read girth.  Corrections from The Indian Forester, 1891.

From the literary scalawag Jonathan Caws-Elwitt:

Chaos is inchoate, but it's so inchoate that its "c-h-a-o" has no etymological relationship to the other word's "c-h-o-a."

Here's someone who somehow managed to take 30 years to come up with a symbol for the word "the," only to gain the general public's indifference.  From Popular Mechanics, 1929.

For "tomb," substitute "turf."  From Leigh Hunt's London Journal, 1835.

Healthful for beautiful, importations for impartations, philosophy for philology, children for childron, worthless for ruthless, and wholly intelligible explanations for wholly unintelligble exclamations.  Corrections from American Annals of Education and Instruction, 1834.

Ungrounded became underground (and Americans are blamed for creating words.)  A correction from The Electrical Journal, 1907.

From Modern English, Book 2 by Henry Pendexter Emerson, 1905.