in the septal glands of Narcissus. 
55 
I use the term glucose to denote any soluble carbohydrate 
which reduces Fehling’s solution immediately, and saccharon 
for those which reduce the same only after inversion. There 
is unfortunately a good deal of confusion as to the use of 
these terms 1 , but I wish to point out that the term as used 
below is to be taken, not as signifying a definite substance 
sucro-dextrose, but any member of the class of glucoses ; 
thus, ‘invert sugar’ and even maltose might be included 
under the term as used here. 
Cane-sugar, sucrose, or saccharon, is the only substance 
capable of inversion likely to be present, and where the term 
is used below it can fairly be regarded as synonymous 
with cane-sugar; but here again I only intend the term to 
stand for any member of the class of saccharons as defined 
above. 
Before proceeding to the account of changes in the secreting 
cells I give a brief description of the general structure of 
the glands in Narcissus . 
In the genus Narcissus 2 
there are three separate 
glands : one in each sep- 
tum of the ovary, not 
united in the centre and 
simple; they only occupy 
the upper part of each sep- 
tum not extending below 
the middle of the ovary. 
The ducts are short and 
straight, widening some- 
what at the free end where 
they open into the base of of the glands, 
the floral tube (Fig i). 
The tissue of the septa is loose, with large intercellular 
chambers, but becomes close towards the centre in which 
Fig. i. Transverse section of upper part of 
ovary of a fully open flower of Narcissus 
pseudonarcissus , L. ; showing general position 
1 See Armstrong and Groves, in Miller’s Elements of Chemistry, Part III, § i, 
p. 649. London, 1880. 
2 Compare Grassman on Crinum asiaticum, taf. i. n-13, and Stadler, loc. cit. 
