ANOTHER and a familiar figure has passed from among us, diminishing the strength of the tie that links the present generation to the science of the past. Almost a contemporary of Airy and of Herschel at Cambridge, Prof. Pritchard has seen the school, which they may be said to have inaugurated, lose its members one after another, to be himself among the last. But in no sense can it be said that he outlived his reputation, or that he was not a worthy disciple and an admirable exponent of that school. Nor was he content to remain simply a disciple. His ambition was to stand in the front rank, and to contribute his quota to the further progress of science. And this is the more remarkable and the more praiseworthy when it is remembered that he was considerably advanced in life before he devoted himself to any special science.