Complex sentence: During this period, he began to be interested in vitamin C while on an expedition to Rankin Inlet, Nunavut on Hudson Bay, impressed by the good capillary strength of the local Inuit, surmising this to be due to raw fish in their diet.
Split into simpler sentences: During this period, he began to be interested in vitamin C while on an expedition to Rankin Inlet, Nunavut on Hudson Bay. Clemetson was impressed by the good capillary strength of the local Inuit and surmised this to be due to raw fish in their diet.