318 
POPULAK SCIENCE REVIEW. 
mildew, mustiness, &c., which occasion the loss of thousands of pounds 
amiually to those concerned in such produce. This apparatus, which is 
A. Tunnel-shaped ventilator, n. Section of perpendicular cylinder with small 
holes or perforations, c. Sections of horizontal cylinders with same. d. In- 
terior pipes for keeping up the circulation, e. Mouth or opening of pipes d. 
E. Standards for supporting lower horizontal pipes and apparatus generally. 
G. Inner openings of pipes n. h. A. compartment in the ship or other place 
containing the grain, seed, &c., with the apparatus introduced therein, i. Deck 
of ship. K. Sponges chemically prepared for purifying the air as it passes into 
the cylinders, n. Supports for the upper horizontal pipes. A cap is provided 
for the cylinder n when the funnel ventilator is removed. 
