The density of sulphur dioxide has been measured by the same method as that previously described in this Journal and equations of five isothermals are given. Some evidence of adsorption influence appears in the isothermal at − 7.82 °C. The normal density of sulphur dioxide found is 2.9262.

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Sorption isotherms of salt fish muscle determined by the quartz spiral balance show that the material is isohygrometric between 0.30 and 0.754 activity and 15° to 35 °C. temperature. Above 0.754 the system acts as a saturated solution of sodium chloride.

It is shown experimentally that the equation for heat flow in a finite cylinder [Formula: see text] can be effectively used with lethality data for the controlling organism to calculate sterilization times for fisheries products packed solidly into cylindrical cans.