In the 1570s the privy council consulted him and Roger Marbeck, another royal physician, concerning diseases encountered in the English naval campaign against the Spanish.
[3] Just before the Spanish Armada, Browne, Gilbert, Marbeck and Ralph Wilkinson were put on alert to help the navy with drugs.
He had learned some Arabic, and William Bedwell relates that, when ambassadors came in 1600 from the Sultan of Morocco, Browne was the only person who could understand them.
A dictionary he compiled to the works of Avicenna was unpublished, but was used much later by Edmund Castell for his Lexicon Heptaglotton, and Browne is mentioned in the introduction.
[5] He collaborated with Thomas Blundeville, on The Theoriques of the Seuen Planets (1602), an astronomy book that also published research of William Gilbert on magnetism, and contained work by Henry Briggs and Edward Wright.