170 
them in tlie tissue of the organ; they, therefore, have left 
the blood vessels as they have in the |)clvic organs. Admitting that 
they change their place in the tissue one will easily see tliat seveial 
things may happen. I will at this place only mention the possibility 
of some eggs getting into a blood vessel of the hepatic 
system. Should this take place the blood stream would cart) 
them away from the liver ; the next place where they are likely to 
become arrested again is the lung. Observation has shown that 
the organ in which, next to the liver, lateraJ-spincd eggs are most 
commonly found i s the lung. W hat happened in the liver may 
happen in the lung; the eggs escaping from the latter would be 
carried by the arterial circulation to every possible organ. As a 
matter of fact, stray lateral-spincd eggs have been seen at ver)’ 
different places. I will add that the way just described is not the 
only one by which they may reach the lung and other organs: 
however, these details may here be omitted as having no direct 
bearing on the questions under discussion. 
Returning to the eggs in the liver, there is, in addition to the 
possibility above mentioned, the other possibility of their getting 
a part of the biliary system. In this case they would be 
carried to the gall bladder and thence into the intestine, from 
they would be voided with the faeces. 
which 
After 
I had ascertained that in certain cases lateral -spined eggs could not 
possibly be derived from rectal lesions, I came to think of 
possibility as an explanation of their presence in the faeces. Obser 
vation showed that the theory held good in this case also. 
first body available the first preparation made of the bile from the 
bladder revealed under the microscope four lateral-spined 
others were found in scrapings of the bladder wall, in the bile 
and all along the intestine. Three other cases examined subsc^l^^^ ^ 
presented similar conditions; I have not deemed it necessary » 
examine more. The theory had led to a conclusion which 
tested by observation proved to be correct. 
This is one explanation I have to offer for the occurrence “f 
lateral-spined eggs in the faeces. There are others still, but 1 
not allow myself to enter upon details which liave no direct beat'”® 
upon the question which here interests us. Observation has 
, , —ua. V-au&CIVdllOIl 
shown that the occurrence of lateral-spined eggs in the facct^^ 
thus 
of 
