What are some lines for mockery in this proposal?

From the text:

I grant this food will be somewhat dear, and therefore very proper for landlords, who, as they have already devoured most of the parents, seem to have the best title to the children.'

"..... whoever could find out a fair, cheap, and easy method of making these children sound, useful members of the common-wealth would deserve so well of the public as to have his statue set up for a preserver of the nation."