32 



ANIMAL MECHANICS. 



P. K. was executed on the 20th of July, 1865, for 

 murder : — 



1. Weight in clothes, 160 lbs. 



2- Length of drop, 14 feet 6 inches. 



3. Height during life, 69 J inches. 



4. Height after death, 7 1 inches. 



5. From tip of acromion to metacarpo-phalangeal articu- 

 lation, 28 inches. 



6. From olecranon to metacarpo-phalangeal articulation, 

 15 inches. 



7. Weight of m. biceps humeri, 5.9 oz. av. 



8. m. supraspinous, 2.4 



9. m. rectus femoris, 9.2 » 

 10. „ brain, 53.3 oz. av.* 



Combining together the results of Tables III. and IV., we 

 have : — 



1. Average weight of supraspinatus, 1.67 oz. av. 



2. Average weight of portion of del- 



toid employed in holding the 



arm in the horizontal position, 2.83 „ 



Total Weight, 4.50 oz. av. 



Hence, assuming the coefficient o>, to be equal to unity, 

 we find, from Tables I. and II. : — 



Work done by Shoulder Mus- 

 cles employed in holding 

 the unloaded Arms horizon- 

 tally, per ounce, per second, 



= 3*S™L . 68 ft . lbs . 



507 x 4.5 



* While these pages were passing through the press, I had an opportunity of 

 weighing the brain of a distinguished mathematician, and found it to he 47 oz. 

 I leave the deduction of suitable inferences to phrenologists. 



