402 
Tapeworms of Birds 
results were rather contradictory (Table II). Altogether 131 brandlings 
were fed with the ripe proglottides and of these 122 lived long enough 
TABLE II. 
Dates 
-ft VO O *0 ’w 
VO O VO _ VO VO t-» I—( t-i ^ 
l i-t i-H rH i-t r-t i-H .'Tt? 
a 
Number of 
05 
i—1 
-« 
co 
VO 
vO 
to 
to 
05 
Z-H 
s.g 
Z - 
o 
brandlings 
ai 
CM 
oi 
O 
T—1 
CO 
r-i 
1 A 
10 young 
s 
— 
E 
3 
7 
2 A 
10 „ 
s 
E 
3 
6 
3 A 
10 „ 
s 
— 
E 
2 
8 
4 A 
10 „ 
s 
— 
E 
4 
5 
5 A 
10 „ 
s 
— 
E 
2 
8 
6 A 
10 „ 
s 
— 
E 
i 
9 
7 A 
10 „ 
s 
— 
E 
7 
2 
1 c 
10 adult 
s 
— 
— 
E 
— 
— 
— 
— 
— 
— 
— 
— 
— 
0 
10 
11 A 
) 5 „ ) 
l 1 young S 
— 
— 
— 
— 
s 
— 
E 
— 
— 
— 
— 
— 
— 
0 
5 
12 A 
10 adult 
— 
— 
— 
— 
— 
s 
— 
E 
— 
— 
— 
— 
— 
0 
10 
13 a 
10 „ 
— 
— 
— 
— 
— 
s 
— 
— 
E 
— 
— 
— 
— 
0 
10 
14 A 
4 „ 
— 
— 
— 
— 
— 
— ; — 
— 
— 
— 
s 
— 
E 
— 
0 
4 
15 A 
10 „ 
s 
E 
— 
0 
6 
17 A 
6 „ 
s 
— 
E 
0 
6 
18 A 
5 „ 
s 
— 
E 
0 
4 
131 22 100 
S = date when started. E = date when ended. 
to be recorded. The low mortality is due to the easiness with which 
these worms can be kept in captivity. Beyond a little wet sand or 
blotting paper they require no food and no attention, and with only this 
can live for over nine months. The best place to keep them was found 
to be in small covered dishes or Petri dishes lined with moist blotting 
paper. Upon this the tapeworm proglottides were placed, fresh from 
the fowls’ intestines and with no previous washing. Another layer of 
moist blotting paper was then placed over them and the worms placed 
in the dish. Between the two layers the worms collected and were 
thus constantly rubbing over the onchospheres, some of which coidd 
hardly fail to be swallowed. The first, and only successful experiments 
were made in this way and the brandlings kept without food all the 
time. It was found though that the onchospheres reached only a 
certain stage of development and then disappeared. This might have 
been due either to insufficient food or to the youth of the worms. Fresh 
experiments were consequently made with adult and young brandlings, 
