equal it is no more difficult to remove or destroy one kind of worm 
than to remove or destroy any other kind. With a suitable drug the 
removal or destruction is easy; without such a drug it is difficult or 
impossible. The present literature on the treatment of infestations 
with nematodes outside of the lumen of the digestive tract has little 
in the way of definite positive results to record as yet and can only 
be briefly summarized here. 
TREATMENT OF TRICHINOSIS 
In the treatment of trichinosis, recommendations of various drugs 
have been made largely on the basis of clinical improvement or cure, 
without reference to whether the worms present in the muscles were 
affected or not affected by the drug. On such a basis McNerthney 
thymol of value when given subcutaneously or intramuscularly In re¬ 
peated doses, and Rosique (1917) found grey oil of value. But 
Eisenhardt (1918) found that thymol did not prevent the development 
of trichinae, and Romanovitch (1912) found salvarsan devoid of action. 
In trichinosis there are several factors present, and a given treatment 
may leave the larval worms in the tissues unaffected and at the same 
time aid the patient by the elimination of adult worms from the lumen 
of the intestine, by neutralizing toxins, etc. As an illustration it may 
be noted that Salzer (1916) found the use of serum from recovered 
patients valuable in the treatment of other patients and claimed that 
the use of such a serum in animals would prevent the development 
of trichinosis. Schwartz (1917) tested these claims and found that 
trichinae would develop in animals regardless of the use of serum. 
Hall and Wigdor (1918) also carried out tests along this line and 
although they confirmed Schwartz’s findings to the effect that 
trichinae would develop in spite of the use of serum, they found that 
treated animals usually lived longer than untreated animals. They 
concluded that the serum of animals which had recovered from trich¬ 
inosis probably had anti-bodies which were of service in neutralizing 
certain worm toxins responsible for part of the pathological conditions. 
Von Linden (1917) claims that severe trichinosis can be prevented in 
guinea pigs and rabbits by feeding them copper preparations, check 
