Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Bonding tests Test plates Test plates Test plates Concrete tests Test pots Test pots Test pots Tests Edges 4+5 Edges of 15 and 16 Briguettes Bricks, side views Cement testing laboratory, Cypher St. yard Elevated posts Dewey Square, Boston, Mass. Construction sec.C excavation in front of Regal Shoe So. Construction sec.C Summer W. of Church Dorchester Tunnel buildings Dewey Sq. Sec.C Summer St. depression at High St. looking easterly Bonding tests Bonding tests, 1" diamond bars, before testing Pattern shop Cypher St. Bonding tests Bonding tests Bonding tests Bonding tests, 1" slick bar splice before testing Cypher St. Yard, s.e. end Bonding tests Bachenden Wharf Douglas fir specimens after testing Long leaf hard pine specimens after testing Mould and reinforcement for unit stairs Cypher St. yard Washington Station, details of stairs, etc. Shield for sec. E at Boston Bridge works Arrival of part of shield sec.C Buildings 467-455 Dorchester Ave. Buildings 477-473 Dorchester Ave.