No. 129.] 105 



NAVAL ARCHITECTURE. 



The original model of the yacht America, by George Steers, 

 was placed on exhibition. It attracted much attention, and our 

 judges reported the model as " worthy of all praise and entitled 

 to the highest premium." It received the Gold Medal of the 

 Institute. 



The model of the steam ship Illinois, designed by Messrs. Smith 

 & Dimon, of New- York, the model executed by Mr. Henry Owens, 

 1 58 Lewis street, New- York. The judges reported the design as 

 the best on exhibition, and that the execution of the model in 

 point of workmanship was the best they had ever seen. The de- 

 sign received the Gold Medal, and the artizan for the workman- 

 ship displayed in constructing the model, the Silver Medal of the 

 Institute. 



The model of a clipper ship by L. H. Boole, 191 East 15th St., 

 New-York, was reported favorably on by the judges, and receiv- 

 ed the Silver Medal of the Institute. 



PALMER'S IMPROVED PATENT ARTIFICIAL LEG. 



Messrs. Palmer & Co., Springfield, Mass., exhibited their im- 

 proved artificial leg, of which the judges on surgical instruments 

 speak in terms of the highest commendation, and close their re- 

 port by saying, " it is superior to any other ever constructed, 

 and merits for science and humanity the highest testimonial of 

 the Institute." 



The body or skeleton of the leg is made from pieces of solid 

 willow wood, it being the lightest and strongest material appli- 

 cable to such purpose. The thigh, leg, and foot pieces are made 

 hollow, and carved externally so as to imitate the natural leg in 

 size, form, and symmetry. The knee, ankle, and toe joints have 

 the motions of the natural limb, including the ball and socket 

 formation ; this is an ingenious improvement over the mortice 

 and tenon and metalic joints. The ball and socket joints are re- 



