•5.6. 



d5 



e 



^'■e the 



fritll, 

 y> that 



e nee- 

 h afFords 



1 



7 



» which 



' female, 

 tes, 



\ 



asm 



le female 

 ;, totally 

 ous pro- 



p, which 



uice, like 

 ; flower- 

 tes a new 



ur 111 



the 



epurp 

 ,f honey; 



> 



)re 

 ary 

 bed 

 ,ility 



nutri- 



after 

 u'ith 



an 



d 



Vii- 



SEC^' 



Sect. V. i 



AORTAL ARTERIES AND VEINS. 



S7 



/ 



SECT. 



V. 



THE AORTAL ARTERIES AND VEINS OP VEGETABLES 



I 



Aortal arteries in vegetables have correfponde. 



Shewn by experiment 



pkrisy tragopog 



iphorbi 



the calyx of Jit 



Circulation 



Jhewn by ingraftingfiriped-pajfm-jiower, andjajmine, and hardier Ji 

 keredftemsy from fruit -grafts on badftocks degenerating 



1. Vegetable circular 



performed without a hearty as in the aorta and liver offijh. 3 . Force of the 



of abjor bents greater than that of the heart in producing circulation. Why 



Circulation in the veins of animals 

 nee in the capillaries and glands. 



there is no pulfaticn in the vena portar 



produced by abforption 



fmall refifi 



Wounds in trees firongly abforb fluids except in the bleeding feafc 



Vegetable 



vejfels too minute to carry red bloody hence not eaftly inje£led with coloured fluids 

 Charcoal injected with quickfdver, or me 



Hed 



5. Recapitulati 



Circula 



performed by irritability of the vejfels y and by the great power of abforption 



6 



ems unite at 



and the a^ion of the fides of vejfels corfifilng of a fpiral line. ■ 



the lower and upper caudex gemma. Abforb ents and umbilical vejfels conflfl of 



a fpiral line. Experiment by placing euphorbium firfl in adeco5lion of galls , and 



then in ajolution of green vitriol, JunMon of great veiny ahjorbent trrniky and 



pulmonary artery in the upper caudex gemma. Embryon budjeen in conta5i with 



the pith. Experiments with charcoal inje^ed with white paint yjuety wax, and 



^uickfilver. 



I 



. The two principal arteries in anin:ial bodies are the pulmonary 

 artery and the aorta. The former receives the blood from the right 

 cavity of the heart, and difperfing it round all the air-cells which 

 terminate the bronchia, or air-pipes of the lungs, expofes it to the in- 

 fluence of the atmofphere through the thin moid membrane, which 

 lines them. This we have fliewn in Sedt IV. I. 3. to be refembled 

 in its office by the vegetable arteries, which carry their blood up the 



I 



foot* 



\ 



