32  GORTNER AND Harris: FRUITS OF PASSIFLORA GRACILIS 
Or disregarding the presence of prolification and adding to 
these the other fruits which are abnormal (tetramerous as con- 
trasted with trimerous) in the organization of their ovary wall 
(i. e. classes (g), (h), and (7)), we get 
Br eee os 10 6 | + 0.008° C. 
J: Gere ir sy oR eee cm 3 12 — 4.21 
GE ORS Ps Io 5 + 0.151 
Apparently, therefore, those fruits which are tetramerous or 
which show transitions between the trimerous and tetramerous 
condition, show a greater depression of the freezing point (and 
consequently a higher osmotic pressure) of their juice and a lower 
average molecular weightt than the trimerous ones. But the 
differences are so very slight, and the difficulties and sources of 
possible error are so many, that further studies will be required 
to put this conclusion on a sound basis. 
Turn now from the classification of the fruits according to 
the characteristics of the ovary wall to a consideration of the 
question of prolification. Here classes (6), (c), (d) may be left 
entirely out of account. 
First dividing the fruits that have prolifications into the 
classes, trimerous and tetramerous, with respect to the char- 
acteristics of the ovary wall, without regard to the size or the 
structure of the included body, we have the following: 
For trimerous fruits (classes (e), (f) and (i)), 
Ae Mapes Nesatica aa Mean value of 
— 5: rie differences 
es ee eee Ce cue oly 5 2 + 0.016° C 
lagi eis nko 4 > + 3.21 
Wie scnete Binie gtk es 5 I + 0.417 
For tetramerous fruits (classes (g), (h) and ( j), 
* Depression of freezing point is available in one series in which the eee was 
determined. omit 
the difference of the freezing points would indicate, inasmuch as colloids do not 
croleacdhae cee msuence the amount of total solids and through this the average 
weight. 
not cacalated, te the cent Point lo avaliable fr one case for which Af and F 
were not calculated, for the reason noted abo 
