Method of forming Gardeners^ Ovals. 361 



25. Flas been sitting up, and walking about the room, for 

 the last three days, without any inconvenience. The wound 

 has not healed by the first intention, but the granulations 

 look healthy. 



Aug. 1 . The wound has been dressed every second day^ 

 and is nearly healed ; her health is quite good, and she does 

 not feel any inconvenience. 



Sept. eo. She has taken her accustomed exercise, and 

 nursed a child without pain or inconvenience. Nor is there 

 the least appearance ti' any protrusion of the hernia. The 

 bandage h;is been continued to make pressure on the part^ 

 as some objections we started to wearing a truss. 



John Taunton. 



LXV. A7i easy Method of forming all Kinds of Ovals^ 

 commonly known by the Name of Gardener's Ovals*. 



JL HE oval, as is well known, is an elliptical figure formed 

 by a curved line, which re-enters into itself, and which is 

 composed of several portions of a circle which have various 

 centres. 



The execution and demonstration of this figure pre-sup- 

 pose a degree of knowledge which every body does not 

 possess; but a method has long been known of forming 

 it with exactitude in a practical manner ; and an acquaint- 

 ance with it will be sufficient for artists, gardeners, and 

 other persons who wish to trace this figure : the follovving 

 is a description of the method in question : 



Every oval has two diameters: one long like the line 

 AB (Plate IX.), which is called the great diameter, and the 

 other short, wliich is called the small diameter, like the 

 line F 11, which forms with A B four right angles, since 

 it is perpendicular to it. These two lines are reciprocally 

 intersected at their middle point, whatever length we may 

 suppose these two diameters to have. 



It is requisite to trace a curved line, which passes at tha 

 different points AFBll, where the great and small diame- 

 ter terminate. 



With this view, from the middle of the great diameter to 

 the point L trace the small arcs to the points G and D, 

 which ought to be e(pially distant from the point L, and 

 consequently from the points A and B. 



Plant at the point of intersection of these two arcs, C and 



• Bil;. Plnj^. Econ.idScmeilre 1811, n. 26e. 



