Concrete in the country / [American Cement Company]. (1910)
American Cement Company · Association of American Portland Cement Manufacturers · leaf 96
than one opening is desired in thecap, use two pieces of tile or as manyas there are to be openings. Mix concrete I :2 :4, the mixtureto be a thoroughly wet one. Place in the form, after greasing outside of terracotta so that same may be easily removed. Leave undisturbed for two days. Re-move forms…