The British palladium [electronic resource] : or, annual miscellany of literature and science: for the year 1770. The first part consisting of new and select subjects, of general utility. The second part containing answers to the former year's useful enquiries; with new and curious enquiries proposed for the present year. For the use of gentlemen and ladies, youth at school, and also navigators. Serving both for land and sea. The twenty second number published. Being a connexion, and fit to be bound with, The nautical ephemeris, and its key, for 1770. By the author of the improved and perpetual Royal astronomer and navigator.