The gentleman's recreation [electronic resource] : or the second part of the art of gardening improved. Containing several new experiments and curious observations relating to fruit-trees: Particularly, a New Method of building Walls with Horizontal Shelters. Illustrated with copper plates. By John Laurence, M.A. Rector of Yelvertoft in Northamptonshire. To which is added by way of appendix, A new and familiar way to find a most exact Meridian Line by the Pole-Star; whereby Gentlemen may know the true Bearings of their Houses and Garden Walls, and regulate their Clocks and Watches, &c. By Edward Laurence, Brother to the Author of this Book.