382 DETAILED SYNTHESIS. 



1220. /*. (1.) Digestion is frequently attended with chilliness; 

 brainial activity, with cold feet. (2.) Persons should not bathe nor ab- 

 stract the mind during digestion, etc. (3.) If the skin contracts, the 

 Blood overcharges the brain, air or digestory passages, causing death, 

 colds, or derangement of the bowels. (4.) The activity of any part 

 quickens the pulse. 



1221. Remark. If it is remembered that THE SKIN SHOULD CONTAIN 

 one third of the Blood, the effects of its exposure till its Blood is driven 

 inward will not be surprising ; they would be worse and more often seen 

 were it not for the friendly office of the kidneys, that rapidly remove 

 water from the Blood, reducing its quantity and increasing the amount 

 of heat producible by it. But the waste substance the skin ought to 

 remove, must in this case be eliminated by the air or digestory passages, 

 overtasking them, or it must remain in the body, oppressing all parts, 

 especially the brain ; both evils result to a degree. Hence, checking the 

 circulation through the skin is the greatest of evils, and to keep it warm 

 is the most important of rules. It will also, if the facts of ^f 1217 are 

 considered, appear natural that when the Blood is driven in from the 

 skin, it should engorge the lungs, as they can most readily allow it a 

 place, the digestory canal being next in order, and the brain last. It 

 will also be most likely to distend those parts first that are most active, 

 as hi winter the lungs, in summer the digestory canal, producing cough 

 in one case, bowel affections in the other ; and will also be most apt to 

 distend parts diseased, they not being able to resist the pressure. 



SECTION VI. 



JW. Circulation : JV. Circulatory Apparatus. 



1222. Remark. IT MUST HAVE BEEN ABUNDANTLY EVIDENT DHRING 

 THE STUDY OF THE ORGANS, that they require different quantities of Blood 

 at different times ; and now it is clearly seen that while the Heart drives 

 out the Blood through a single artery and its branches toward all organs, 

 there is need that its flow be increased and diminished through the dif- 

 ferent branches at different times. It is also important that the ten- 

 dency of the Blood to flow to or from parts should at times be resisted. 



1223. Inf. When the cold acts upon the skin, and drives the 

 Blood inward, it should be forced outward again. 



1224. There are good reasons for believing that THE 



SYMPATHETIC OB GANGLIONIC NEEVOUS SYSTEM (Fig. 1 92) 



1220.T11UB, 1221. What ? Wfcat said of Blood driven In from skin? 1122. What 

 ? 125*4. How ig ? 



