322 
FREDA RAGE. 
concerning especially the inner segment, for the outer seg- 
ments of all the cones (fig*. 5, o.s. 1>3 » 4 ) are practically alike. 
The entire cone is flask-shaped with a strongly swollen inner 
segment, both paraboloid and ellipsoid being of relatively 
enormous size. No oil globule is present. The ellipsoid is 
less definite in shape even than that of the ordinary single 
cone ; it is very strongly vacuolated in appearance, and fine 
dots are present (fig. 5, ell. 3 ), which are in all probability 
the points where the walls of the vacuoles meet one another. 
Towards the distal end of the ellipsoid the vacuoles are much 
larger, though they still appear to be arranged irregularly. 
A more definite arrangement of vacuoles is seen in transverse 
section. On the side of the ellipsoid nearest to the stalk of 
the far cone they sometimes appear to be arranged in a single 
row (fig. 9, e.). If the section happens to pass through the 
distal portion of the ellipsoid they may appear as shown in 
fig- 9 (/)• 
The paraboloid measures 15*5 ji in length, nearly twice 
the length of that of the ordinary single cones. It has a 
thick wall like that of the paraboloids of the single cones, 
except at the distal end, where the wall at first sight appears 
to be missing*, so that the ellipsoid seems to rest as upon 
the open mouth of a cup (fig. 5, w.p.t.) ; but there is probably 
a thin wall to the paraboloid even here. The contents of the 
paraboloid stain in various ways. With picro-nigrosine after 
fixation with acetic bichromate (fig. 5), a slightly staining 
coagulum becomes visible, purplish in colour. The Flemming 
fixed material, unstained or with the Weigert Pal stain, 1 
shows the contents more definitely coagulated, forming a 
yellowish network in which the nodes show as dark spots 
(fig. 7 In the same material, stained on the slide with 
brazilin, after being stained in bulk with borax carmine, the 
paraboloids of these cones became a distinct pink colour, 
while those of the others remained practically colourless. 
The connection of the inner segment of these cones with 
the nucleus takes place as in the case of the ordinary single 
1 See ‘‘Methods,’* p. 308, for explanation of this preparation. 
