The Hariot manuscripts, of which there are thousands of folio pages all in his own handwriting, seem to be still in the same confused state in which he left them. He directed that the ‘waste’ should be weeded out of his mathematical papers and destroyed. But this duty seems, fortunately for us, to have been neglected by his executors, and hence among this ‘waste’ one has even now no great difficulty in recognizing in the well-known Latin handwriting of the’ magician,’ many jottings in chronology, geography and science, and many abstracts and citations of the classics, that in their time must have played parts in the _History of the World._ The Will now first produced lets in a flood of light on the history of these valued papers, and dispels a great deal of the heaps of foreign pretension, domestic assertion, and mixed charlatanism that have since 1784 beclouded the memories of both Raleigh and Hariot. It is true that on a hint in the previous century from Camden of a will by the great mathematician, many conjectures were afloat from the days of Pell, Collins, Wallis and Wood, but it has not been possible until now for one, with due knowledge of the main events in the lives of these two men, each equally great in his own sphere, to satisfactorily clear away any considerable portion of the misconception and misstatements of biographers and historians concerning them and their achievements. The dawn however is coming, when these new materials now first printed by the Hercules Club, but not worked up, may attract the attention of some historian competent to give them a thorough scientific scrutiny and ‘pen their doctrine.’