KLIPFISH PRODUCTION In recent years ever-increasing importance has been attached to fish as a food. This is reflected in the systematical efforts now being made in many countries with a view to increasing the household consumption of fish. There are several reasons for this. The more important of them are to be found in the results of dietetic research, which has established that fish is a food of unusually great value to the health of a nation. It has been proved, amongst other things, that fish, or more precisely the liver of fish, is richer in those vita- mins which are of such exceptional importance to the human organism, than any other known product. It has further been proved that saltwater fish and various products thereof, on account of their iodine value, are an uncommonly efficacious prophylactic for goitre — a disease particularly prevalent where the population consumes little or no fish. As one of the leading fishery countries in the world Norway, too, has taken part in this research. The work done by Norwegian scientists includes an extensive investigation of the iodine content 143