( 69 ) 
which I imagined not unlikely to happen, confidering the voracity of the animals ; but con- 
trary to my expe6fation, they lived together very quietly for the fpace of eight days, without 
any aliment, fo far as I could perceive. I alfo put fome duck-weed (kmna) into the 
glafs, as thefe Spiders are fond of taking refuge underneath it. On the 9th and loth days, 
the females began to ftretch threads from the lemna to the fides of the glafs, at about a third 
of the height from the bottom. On the 1 ith, they thickened the threads, but in a confufed 
manner 3 the threads which were firft fpun were faftened diagonally, and the Spiders feemed 
to amufe themfelves in walking longitudinally upon them. On the 12th day, the male was 
feparated from the females, and placed in a glafs by himfelf. On the day following, two of 
the females fixed a clofe bag to the edge of the glafs, from which the water was expelled by 
the air from the tubercles, and thus a cell was formed, capable of containing the whole 
animal. Having done this, and air enough being emitted to drive down the water to the 
bottom of the cells, they quietly remained there, the abdomen pofTefTing the cell of air, and 
the thorax ftill plunged in the water. In a few days, the reft of the females finifhed their 
cells' in the fame manner. In a fliort time, brimftone-coloured bags of eggs appeared in each 
cell, filling about a fourth part of them. They now very rarely quitted their nefts, but often 
plunged the thorax and legs fomewhat deeper into the water, whilft the region of the tubercles 
was ftill kept in the dry. Four days after, I poured off half the water, and put in frefti. On 
the 7th of July, feveral young ones fwam out from one of the bags. I opened the other bags, 
and found the eggs very fmall, feparate, and round. From the middle of May to July, they 
had nothing to eat, and yet they never attacked one another, as the Aerial Spiders are ready 
to do upon fuch occafions. 
CHAPTER IX. 
OF TWO-EYED-SPIDERS. 
Amongst more than ftxty Spiders deferibed in the courfe of this work, there is evidently 
a general fimilitude. The Two-eyed Spiders, however, are more ftrikingly diftinguifhed from 
the proper ones, than the birds of the order Accipitres, are from thofe of the order Gallince. 
T Of 
