The gentleman's recreation: or The second part of the art of gardening improved. [electronic resource] : 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 Yelvertost 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.