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MEDICAL NOTES IN PARLIAMENT
1884
The Lancet
wards the can is filled and the cap is soldered on, and the can is put in boiling water ; this drives out the air, and the hole is soldered up. As the can becomes cold the heads bulge in, and stay bulged in. Now, if decomposition sets in, the heads bulge out." In the language of the trade such cans are "swells." It is a well-known trick of unscrupulous dealers to go around the trade and buy up "swells." By punching another hole and heating or "re-processing," the gases would escape and the
doi:10.1016/s0140-6736(02)12745-0
fatcat:uht2xrgifnaerdsjxoqphwgncm