A letter of John Evelyn, Esq. to the Right Honourable the Lord Viscount Brouncker, chancellor to Her Majesty and president to the R. Society, &c

concerning the Spanish sembrador or new engine for ploughing, and equal sowing all sorts of grain, and harrowing, at once, by which a great quantity of seed-corn is saved, and a rich increase yearly gained : together with a description of the contrivance and uses of this engin., English't out of Spanish, and lately presented to the R. Society