Notes. 625 
a remarkable resemblance to that of the floral peduncle of Cabomba 
aquatica. 
Again, in the rhizome itself the arrangement is not altogether astelic, 
for by the aggregation of the separated bundles of the stem a number 
of steles are formed, one in the region below the point of insertion of 
each leaf. These groups of bundles appear to be set apart for the 
especial purpose of bearing the adventitious roots, and they are to be 
found in varying degrees of perfection throughout the order. I found 
Victoria regia and certain species of Nymphaea to possess the most 
perfect root-bearing steles ; they are composed of ten to twenty bundles 
arranged in a ring, and are perfectly distinct and well defined. On the 
other hand, in other species of Nymphaea and in Nuphar, the bundles 
set apart for bearing the adventitious roots are not arranged in 
a sufficiently regular manner to be considered as a stele, or are only 
laterally fused together to form an arc of greater or less extent. 
D. T. GWYNNE-VAUGHAN. 
CHANGES IN THE TENTACLE OF DROSERA EOTUNDI- 
FOLIA, PRODUCED BY FEEDING WITH EGG- ALBUMEN \ 
— In unfed leaves fixed in watery picro-corrosive (sp. gr. 1-020) and 
stained with eosin-toluidin blue, the apical and lateral glands of the 
first or outer layer and also all the cells of the second or middle layer 
show a deep-blue cytoplasm, with nuclei possessing little chromatin 
proper, but large nucleoli and a granular nucleoplasm. Within one 
minute after feeding the blue cytoplasm becomes purple ; after one 
hour it is greatly vacuolated and reddish purple ; after twenty-four 
hours the blue material has disappeared, and only a few strands of 
a pink cytoplasm are to be seen. The nucleus after feeding loses the 
granular cytoplasm, the nuclear chromatin segments enlarge enor- 
mously, reminding one of the early stages of mitosis. The nucleolus 
has lost its red chromatin, and is not easy to see. 
Recuperation of the cytoplasm is the result of nuclear activity, for 
the chromosomes enlarge during the period preceding the appearance 
of the granular nucleoplasm, which latter in every respect resembles 
the granular deposit of cytoplasm in immediate contact with the 
outer surface of the nuclear membrane. The cytoplasm is at first 
1 Abstract of a paper read before Section K at the Liverpool meeting of the 
British Association, 1896. For full account see Quarterly Journal of Microscopical 
Science, October, 1896. 
