Sec. 109. Treasurer—additional penalty of five per centum
to be paid on all taxes after June fifteenth of
the year next succeeding that in which they were
assessed—interest.
An additional penalty of five percentum shall be collected upon
all taxes which may have heretofore not been paid or may hereafter
remain unpaid, after the fifteenth day of June in the year
next succeeding that in which such taxes have been or may have
been or may be assessed. Such additional penalty shall be computed
upon the taxes and the prior penalty of five percentum;
and interest at the rate of six percentum per annum shall be collected
upon the principal and penalties of said taxes from the sixteenth
day of June in the year after which such unpaid taxes
were assessed, which penalties and interest shall be collected and
accounted for by the Treasurer along with the principal of such
taxes.