oo _ ‘In this place reference may also be made to the fact that the latex- 
242 PLANT ANATOMY. 
or secreted by special cells or aggregations of cells (organs of 
secretion) in intercellular spaces (oil-passages). 
The volatile oils and the resins come primarily under consid- 
eration here. 
ODN SOON AODae sO ooasoD ONT ATTA OOND IDO VONONDDOONDNIAUNODS 
St TERY Ase SA PSS 
e a cat ey Age By WEA SEES 
= Joy d\ 
BY, 
gtb oy Vee a yen a 
Be Ved ROR VEE ER 
be Fae El i = 
MOHAN OU OOaH UeeOdNONUTNAONNNNMTUCNTOMRCICONNN mincnae acuity 10) 
Fie. 159.—Cross section through the arillus of Myristica spec. (Bombay Mace); ep, 
epidermis; gfb, vascular bundle; oe, oil-cells; g, a larger oil-space formed through the 
confluence of several oil-cells, 
The latex-tubes were also formerly considered as receptacles 
for excretions, but it has recently been rendered probable, by 
Fie. 160,— 
. 
A portion of the same cross section, more highly magnified; cut, cuticle 
(Tschirch), 
the discovery of points of connection with the assimilating tissue, 
that they have some share in the transfer of substances, and 
that their contents are not true excretions, although of more or 
. Jess importance in the process of development.’ 
on 
