72 
the walls is infiltrated with some erythrocytes, mononuclear cells, and a few 
pigmented leucocytes. 
The seventh cyst is small and in the submucosa, but it involves some of the 
fibres of the internal muscular coat. Mononucleated leucocytes and degenerated 
erythrocytes, with a section of a worm containing some pigmented cells and a few 
degenerated erythrocytes, are found in the cavity of the Cy*t. Two thin incomplete 
bands of connective tissue practically subdivide the cavity into three little chambers 
which communicate with one another. The walls show a moderate infiltration of 
mononuclears, small round cells and a great number of eosinophiles. Small rows of 
pigmented cells cross the muscular coats and are collected in little clumps in the 
subperitoneal space. 
It is evident that the fourth cyst was infected from the ulcer of the mucous 
membrane, and that the necrosis extended to the third cyst. 
Colon 
Section through thickened wall of colon at level of fold of mucous membrane. 
Cross-section of the wall shows two small cysts in the submucosa, under the fold 
o mucous membrane. Their contents are purely haemorrhagic, and only comprise 
erythrocytes and a few mononuclears with a section of a worm in each cyst. In the 
internal muscular coat is a long narrow cyst with dense fibrous cells. The 
contents of the cyst are degenerated red blood cells, pigment granules, and several 
g ant cells containing considerable pigment ; a cross-section of a worm is seen with 
m , rous * oo aiig cells in its intestine. The cyst is confined to the internal 
s hn?r ^L COa A pf ma11 cyst is situated in the external coat and extends to the 
and f Um ' int « rmuscular space is infiltrated by mononuclear leucocytes 
ervthrr r t OSm ?P 11 es ' * he contents of this cyst are mononuclears and degenerated 
bS «hp5l! 5 ' 2 Sm , a , H SeCti °" ° f a worn ’l Siam or pigment cells are seen, 
develoned a “ nsI ^ erablc number o£ eosinophiles. Near this cyst, but apparently 
P ,T°T^ “ a fibr °“ S enc,osed <**•■ The oavity contains the 
wo“m“ found sff/ t and a fe ” Polymorphonuclear cells. No 
calcified ores to St , nds of apparently new connective tissue cross the cyst. A 
and a few gianfcell^ arc the' ' , Ihewalls con tain some mononuclear leucocytes, 
outer oerTtoSVnti • S ‘ de adjolmn S the internal muscular coat. The 
found he“tst b,n n? “ Vered »‘ th Ia yms of fibrous caudate. No bacilli are 
present 7 “ the ° n,er la ^ rs ° f “udate a few small bacill, are 
Cysts invading the ileo-caecal valve. 
bad "apparendy d ruptu^ d S mid*al tl^ escape^f S the°* “ SUb “ U h COSaI cyst which 
scanty and comprised a men i ChCa P e of the worm. 1 he contents were 
Much new connective tissue was presentTn^hTr* 1 f nUmber ° f sma11 round ceIls * 
Giant cells were present in the submm-r l ?■ yst . cavit y. No bacilli were found, 
the cyst. th submucosal tissue immediately beyond the wall of 
cystsfSToS^ secticms of ^ '*""*-*• “ comprises two small 
and press upon the muscularis mnr & '\? nn ’ W lic h distend the submucosal space 
but no giant cells ^gmented leucocytes are very numerous, 
of large mononuclears I small Iymoh^ " ‘ U thr « ■***■ is a " d CO"^ 
the neighbourhood are full of normal-ton? i uf W eosino Philes. The vessels in 
Various other nodules in the ing *! ed b,ood cel, s and mononuclears, 
have the characters already noted “ IOn Were secti ™ ed aad ^nd to 
the 'mucous Sembra^"^^^^ 6 ^ im “ ed ^™bVow smalfulterat^nsof 1 
the area was partially 
i 
