draws or filaments, which are fearce obfervable to 
the naked eye, feem, when microfcopically furveyed, 
to confift of a pellucid fkin, and a membranaceous 
yellowifh inteftine, with two or throe fcattered points 
or granules. Thefe bodies, to the number of from 
fix to forty, vary their pofition, but always preferve 
their parallelifm ; forming themfclves either into a 
fquare, an extended thread or line, a zigzag or in¬ 
terrupted line, or other different figures. Some¬ 
times one of the filaments diverges from the reft, 
either at a right or an acute angle, and where the 
group confifis of but few filaments, two will fome- 
times diverge in the fame manner, and Mr. Miiller 
fuppofes that all the filaments are connected by means 
of an extenfile membrane. The congeries or general 
heap refts in a fquare form, and remains thus when 
dead, but forms others, which proceed (lowly fome- 
times from one, and fometimes from the other ex¬ 
tremity, Mr, Muller obferved this animalcule in 
plenty on fome fpecimens of the Ulva latiffima, in 
October, 1781, and again in 1783. 
