Capital letters get the attention, but small letters cause most of the slow reading. In a fast 19th-century hand the e is a tiny loop, the c is the same tiny shape without the loop, and the r can look like an i, a v, or half of a u. Put them together in words like "executor" or "centurie" and the eye gives up.
The trick is to know the usual shapes and then let the word help. Below are real words from wills of 1806 and 1812 and an 1860 census page. For each, look first at the small letters, then read the whole word.












