THE PRESIDENT'S ADDRESS. 
205 
which inhabit them and favour their fertilization in the way I have 
pointed out. If many seaweeds, in their bushy, shrub-like thallus, 
harbour certain infusoria, bryozoa, hydrse, sponges, Crustacea, annelids, 
and small star-fishes, and offer to them excellent hiding-places, or 
nourishment, so that these animals inhabit them with special pre- 
dilection, then it is certainly possible that occasionally a correlation 
was formed, or adaptation took place, which was mutually advan- 
tageous, and which would find numerous analogies in the dominion 
of the multiple cross relations between the higher flowering plants 
and insects. In this sense I consider it my duty to submit to the 
criticism of biologists a jioint hitherto overlooked in the biology 
of red seaweeds, and bearing upon the explanation of the morpho- 
logical differentiation of submerged aquatic plants." 
There is no question but that this discovery opens up a new and 
very wide field for investigation and enquiry as to the mode of 
fertilization and reproduction in other genera of plants. 
A very interesting piece of microscopical work is that of Mr. E. 
T. Newton, who in January last described to the Quekett Club a 
plan which he had devised for preparing a dissected model of the 
brain of an insect. The method was most ingenious. The brain 
properly prepared was carefully sliced up, and an enlarged drawing of 
each section was then made with the camera lucida, and these drawings 
transferred to pieces of wood proportionate to the thickness of the 
sections, and then cut out. Ey putting these slices of wood 
together a complete enlarged model of the external form of the 
brain was produced ; and this can be carried still further by 
making drawings upon one side of the slices, and cutting them out 
like a dissected map. These being fitted together give models of 
particular parts. The structure of nervous centres now occupying 
some attention, I think that this very clever scheme will much 
assist observers, and enable them to observe position and structure 
in a way not hitherto attainable. 
It would take me too long to refer, even in the most cursory 
way, to the work in which microscopists have been engaged during 
the past year. I would refer those interested to the pages of the 
Journal of the Royal Microscopical Society, this old Society 
having now its own journal. For many years its proceedings were 
published in the Monthly Microscopical Journal ; but since the 
death of Dr. Lawson, the support of the Society having been 
withdrawn, this magazine has been discontinued. Science, however, 
