The word hereof is actually not a legal term. Its meaning in court documents is no different from its ordinary dictionary definition -- Merriam-Webester defines hereof as meaning of this.. It's one of those words used by lawyers and nobody else.
The variety of cabbage commonly known as the Flat Dutch, shown in Fig. 6, of which there are many strains, is a moderately long-season variety. The head is very solid and flat; it measures about 12 inches across and 8 inches deep, and weighs from 8 to 12 pounds.
Cabbage seed is small, and about 8,500 are required to make 1 ounce; 1 quart of cabbage seed will weigh a little more than 27 ounces. Samples of cabbage seed are shown double natural size in fig. 20. Early Jersey Wakefield seed is shown in (a) and Danish Ball Head seed is shown in (b). Cabbage seedlings are shown natural size in Fig. 21.