1921] BERGMAN—INTRA-OVARIAL FRUITS IOI 
specimens described by BERKELEY “the nucleus of the ovule was 
not developed.” No transitional forms between ovules and 
secondary fruits such as were described by BERKELEY in the 
carnation were found in these papaya specimens. 
The formation of secondary fruits within the ovary is evidently 
not uncommon in the papaya; and has been observed by many 
persons. It is said that in some instances the intra-ovarial fruits 
are exact models in miniature of the normal fruits. No informa- 
tion was obtained as to whether or not such fruits have a seed 
cavity with ovules or seeds. 
An instance of the formation, in a different manner, of a second- 
ary pistil within the seed cavity. has also been observed. In this 
case the secondary fruit, instead of arising from the placenta in 
place of an ovule, occurred as a proliferation of the vascular axis 
which extends from the pedicel through the pericarp (fig. 6). The 
form of the pistil is not representative of the normal form in pistil- 
late flowers, but is of the type that is to be found in a petunia or 
other similar flower. On cutting the ovary transversely it was 
found that no seed cavity was present. A single vascular strand 
was located in the center. 
Masters refers to intra-carpellary prolification and states that 
“it occurs most frequently in plants having a free central placenta, 
though it is not confined to them, as it is recorded among Bora- 
gineae.”” No instance is cited, however, of a proliferation of the 
form here described. 
UNIVERSITY oF Hawa 
Honotu 
