PiO. 79. 



Fig. 77. — Silo, clay block, hollow wall, erected at the Agricultural .School Farm, 



Crookston, Minn. 



Fiq. 78. — This home-made, plaster-lined silo cost little and gave perfect satisfaction. 



(Woodland Dairy Farm.) 



Fia. 79. — Octagonal barn being built around a silo made by nailing 2 x 4's solidly 



together flatwise in an eight-sided form. (Owned by J. H. Nixon, Nevis, Minn.) 



