50.0 MB (3.7 MB compressed)
4218 x 4143 pixels
35.8 x 35.1 cm ⏐ 14.1 x 13.8 in (300dpi)
ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY
Refrigeration: sectional view of an ice house. It consists of a pit dug and lined with brick, which is a poor conductor of heat, and roofed with thatch for the same reason. Each piece of ice would be dipped in water before being packed in the ice-house, so forming a solid mass with the minimum surface area exposed to the air. A man is pictured ramming down the ice.
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