980 
Journal of Agricultural Research 
Vol. XXX, No. 10 
1 mm. longitudinal section, there was 
obtained the approximate total number 
of eggs in a 1 mm. length of the tube, 
either ovary or uterus (columns c and c' 
of the tables). Such counts were made 
of the first specimen (Table I, Ascaris 
A) on 5 portions of ovary (13 cross 
sections and 13 longitudinal sections 
being counted), and on 4 portions of 
respectively, gave 23,668,372 as the 
total number of eggs in the ovaries, and 
2,821,425 in the uteri, or a sum total of 
26,489,797 eggs in that specimen of 
Ascaris lumbricoides. 
The same procedure was followed 
with the second specimen, except that 
18 cross and longitudinal sections of 6 
portions of ovary and 9 cross and 
o-5 mm. 
Fig. 5 .—Ascaris lumbricoides. Cross section of uterus 
uterus (12 cross sections and 12 
longitudinal sections being counted). 
The average number of eggs in a 1 mm. 
length of ovary, as computed from the 
five parts selected, was 7,431.2; that in 
a 1 mm. length of uterus, as computed 
from the 4 parts selected, was 5,642.85. 
These numbers, multiplied by the 
total length of the ovaries and uteri, 
longitudinal sections of 3 portions of 
the uterus were counted (Table II, 
Ascaris B). The total number of eggs 
in the ovaries was 25,144,591 and that 
in the uteri 2,413,224, the total number 
in the worm being 27,557,815. For 
this second specimen a smaller worm 
than the first was deliberately chosen. 
The fact that the number of eggs in the 
