BONNEMAISONIA ASPARAGOIDES, C. AG. 173 
the union of starch in the paper with iodine in the alga. Taking 
for granted that there had been an excess of starch in the dressing 
of the paper on which the plant is mounted, and that free iodine 
can be taken directly from the living sea-weed, the question still 
remains—why did not the starch in the same paper act on other 
sea-weeds in a similar way ? 
