I'm currently working through a grammar textbook and have come across something that's got me a little confused. As far as I know, you must place a comma between two coordinating adjectives. However, looking at some of the examples given in the book, there are no commas used where I feel like there should be.
The dirty old wallpaper covered the cracked wall.
According to what I've been told about spotting coordinating and cumulative adjectives, I feel as though this sentence requires commas. The sentence makes sense with 'and' placed between the adjectives (at least if the adjectives are reversed), and the sentence makes sense with the adjectives reversed.
Here are a few more examples from the book (again, without the use of commas):
The large dappled horse won the race.
Shouldn't this be: The large, dappled horse won the race.
Small brown deer filled the ancient forest.
Shouldn't this be: Small, brown deer filled the ancient forest.
Any clarification on this subject would be appreciated. It seems like such a simple topic, but it's making me want to slam my head against a wall!