255 
A NEW ARRANGEMENT OF THE BLOODVESSELS. 
By John Jackson, M.R.C.S E. 
First, or Hepatic 
Vascular, System. 
1 . Hepatic Afferent 
Vessels : — The venous 
portion of the spleen, 
and the splenic and por- 
tal vein, and its ramifi- 
cations in the liver. 
2. Hepatic Capilla- 
ries : — The minute 
bloodvessels intermedi- 
ate between the terminal 
branches of the hepatic 
afferent vessel and the 
primary roots of the he- 
patic efferent vessels. 
3. Hepatic Efferent \ 
Vessels : — The hepatic 
veins. 
Second, or Pulmonic j 
Vascular System. 
1. Pulmonic Afferent 
Vessel : — The right au- 
ricle and ventricle, and 
the pulmonary artery 
and its ramifications. 
Third, or Systemic 
Vascular System. 
1. Systemic Afferent Ves- 
sel : — The left auricle and 
ventricle, and the aorta and 
its ramifications. > 
2. Pulmonic Capilla- 
ries : — The minute 
bloodvessels intermedi- 
ate between the termi- 
nal branches of the pul- 
monic afferent vessel, 
and the primary roots 
of the pulmonic efferent 
vessel. 
3. Pulmonic Efferent 
Vessels : — The pulmo- 
nary veins. 
2. Systemic Capillaries : — 
The minute bloodvessels 
intermediate (1) between 
the terminal branches of the 
splenic artery and the pri- 
mary roots of the hepatic 
afferent vessel, and (2) be- 
tween the terminal branches 
of the hepatic artery and 
the terminal branches of 
the hepatic afferent vessel, 
and (3) between the termi- 
nal branches of the syste- 
1 mic afferent vessel generally 
I and the primary roots of the 
! systemic efferent vessels. 
3. Systemic Efferent Ves- 
sels: — (1) The gastroin- 
testinal veins (which ter- 
minate in the middle of the 
trunk of the hepatic affe- 
rent vessel), and (2) the 
superior and inferior venae 
cavae and the coronary vein. 
The Hepatic Afferent Vessel consists of a spleen and 
vein ; The Pulmonic Afferent Vessel consists of a heart and 
artery; and The Systemic Afferent Vessel also consists of a 
heart and artery. 
The pulmonic afferent vessel causes a constant and rapid motion 
of the blood through the pulmonic capillaries, and the systemic 
afferent vessel causes a constant and rapid motion of the blood 
through the systemic capillaries. What hind of motion of the 
blood does the hepatic afferent vessel cause through the hepatic 
capillaries'! It must cause some kind of motion. It can never be 
true that of the three afferent vessels two cause motion of blood 
