Willis Fawcett, Willis Fawcett Letter 1840-01-29
“ In my last to you I promised to furnish a calculation of the probable increase in Hogs properly managed in Texas – Suppose then we have 100 Breeding sows; that they shall be eighteen months old before breeding; that they have two litter of pigs each year; that the pigs shall be half of each gender; and that each sow shall raise six pigs from each litter. Is there any incorrectness in this foundation for a calculation? read it again – it certainly is not painted – in fact the sows will breed frequently at twelve & fifteen months of age; in Texas they are known to breed often three times a year ”
