How to pronounce “h dropping” in English

And in the 19th century, there was a publication of many of these kinds of prescriptive usage guides and grammars, including ones with alluring titleslike these, "Poor letter H-- Its Use and Abuse Addressed to its Little Vowels." This is all about H dropping, if you're aware of that concept.You know, where you say "ow" instead of "how," "and" instead of "hand." Again, a hugely sort of divisive feature