6 CONTENTS. 



90 ; variety of figure, 91 ; how many things must be right for health, 95 , 

 variety, quickness, and precision of muscular motion. 93 ; tongue, 93 ; 

 mouth, 94 ; nose, 96 ; music — writing, 96 ; sphincters, 97 ; combination of 

 muscles, 97 ; delicacy of small muscles, 98 ; mechanical disadvantages, 98 ; 

 single muscles, 99 ; lower jaw, 99 ; slit tendons, 100 ; bandage at the ancles, 

 lOf ; hypothesis from appetency repelled, 101 ; Keill's enumeration of mus- 

 cles, 102 ; why mechanism is not more striking, 102 ; description inferisr 

 to inspection, 102; quotation from Steno, 103. 



CHAPTER X. 



OF THE VESSELS OF ANIMAL BODIES. 



I. The circulation of the blood, 104 ; disposition of the bloodvessels, 104 ; 

 arteries and veins, 105. II. Heart, as receiving and returning the blood, 

 106; heart, as referable to the lungs, 108; valves of the heart, 110; vital 

 motion involuntary, 113; pericardium, 113. III. Alimentary system, 114; 

 passage of the food through the stomach to the intestines. 114 ; passage of 

 the chyle through the lac teals and thoracic duct to the blood, 115; length 

 of intestines, 116; peristaltic motion, 116; tenuity of the lacteals, 116; 

 valves of the thoracic duct, 117 ; entrance in the neck, 117 ; digestion, 117. 

 IV. Gall-bladder, 120; oblique insertion of the biliary duct into the intes- 

 tines, 120. V. Parotid gland, 121. VI. Larynx, 122; trachea— gullet- 

 epiglottis, 122, 123 ; rings of the trachea, 123 ; sensibility, 124 ; musical 

 instrument, 124 ; lifting the hand to the head, 125. 



CHAPTER XI. 



OF THE ANIMAL STRUCTURE REGARDED AS A MASS. 



I. Correspondence of sides, 127; not belonging to the separate limbs, 128; 

 nor the internal contents, 129 ; nor to the feeding vessels. 129. II. Pack- 

 age, 130; heart, 131; lungs, 131; liver, 132; bladder, kidneys, pancreas, 

 spleen, 132; omentum, 132; septa of the brain, 133; guts, 133. 111. 

 Beauty, 134 ; in animals, 135 ; in flowers, 135 ; whether any natural sense 

 of beauty, 136. IV. Concer^-ncr.t, 137. V. C. ending, 138. VI. Inter- 

 rupted analogies, 140; periosteum at the teeth, 141; scarf-skin at the 

 nails, 141 ; soft integuments at the skull, 141. 



CHAPTER XII. 



COMPARATIVE ANATOMY. 



I Covering of animals, 144 ; of man, 144 ; of birds, 145 ; structure of feathers, 

 145 ; black down, 148. II. Mouths of animals, 149 ; bills of birds, 150 ; 

 serrated bills, 150; affinity of mouths, 151. III. G-ullets of animals, 153. 

 IV. Intestines of animals, 153; valves or plates, 153; length, 154. V. 

 Bones of animals, 154; bones of birds, 154. VI. Lungs of animals, 155; 

 lungs of birds, 155. VII. Birds oviparous, 155. VIII. Instruments of 

 motion, 155 ; wings of birds, 156 ; fins of fish, 157 ; web-feet of water-fovr*, 

 159 IX. Senses of animals, 160. 



CHAPTER XIII. 



PECULIAR ORGANIZATIONS. 



Pax-wax of quadrupeds, 162; oil of birds, 163; air-bladder of fisli, 163; fang 

 of viper, 165 ; bag of opossum, 165 ; claw of heron, 166 ; stomach of camel 

 167; tongue of woodpecker, 167; babyroussa. 168. 



