RIVER GARDENS; 
“ Of tlie correctness of these facts any one may 
readily convince himself by examining, with a 
little attention, fresh specimens of any of the 
larger Oscillatorice. 
cc The evidence which I have adduced on this 
subject is sufficient, I presume, to prove the fal¬ 
lacy of Dr. Hassall’s views. 
te Closely allied to the Oscillatorice is the genus 
Spirillum , the motions of which are equally re¬ 
markable. Some time ago I met with one which 
may, possibly, he new, as I do not find it to agree 
altogether with any species described either by Dr. 
Hassall, or any author to which I have been able to 
refer. It comes nearest to Spirillum Jenneri; but 
Dr. Hassall has not seen that species with more than 
eight or ten spiral coils; while the specimens I am 
alluding to have often fifty or sixty spires, and 
occasionally nearly 100. 
cc I have usually found it mixed with various 
species of Oscillatorice . 'Its motions are occasionally 
very active, and are very like those of the larger 
Oscillatorice , except that, in advancing across the 
field of the microscope, the movement is distinctly 
spiral. I have also very often seen two of them 
entwine with each other, and thus present a beau¬ 
tiful chain or cable-like appearance.” 
41 
