512 PHILOSOPHICAL TRANSACTIONS. [aNNO 1/31. 



In open glasses he exposed to the sun several of J.hese cocci, and found that 

 by the 24th of July, every one, according to its size, had excluded a sn)all 

 worm with 6 feet. That part which seemed to be the head, had two short car- 

 iieous antennas; for, he could not perceive with glasses any thing either like 

 mouth or eyes. On the back lengthwise there were two sulci, more or less 

 visible, according to the different motions of the animalculum. Its feet seemed 

 armed with claws, and the first pair stronger and darker than the rest. The 

 whole animalculum was of an obscure purple colour, and had several brisHes 

 of a brown grey. 



These, after 10 or 14 days, lay in a state of rest, and soon became covered 

 with an exceedingly white fine lanuginous substance; in which condition they 

 continued 5 or 8 days longer, and then laid their eggs, 50, lOO, or more a- 

 piece; which to the naked eye appeared but like so many red oblongish points; 

 but with glasses looked like ant's eggs, almost transparent with diluted blood- 

 red contents. 



These eggs, being again exposed in the sun about Bartholomew-tide, were 

 hatched a month after, when some animalcula were excluded, which in the mi- 

 croscope appeared to be hexapods of a purplish hue, with two antennae at 

 their head, and two greyish bristles at their tails, scarcely visible except on 

 black paper. 



He supposes these last excluded animalcula, after some wanderings, at last 

 fix themselves to the roots, and some of the lowest contiguous branches of the 

 polygonum, where being deprived of local motion and sense, by some way or 

 other, they imbibe that succus from the plant; and at last become the cocci 

 so called, full of that blood- red succus so useful in dying. 



j4 Botanical Invitation lo forward a History of the Plants of Swisserland. By 

 Dr. John Jacob Scheuchzer, M. D. F. R. S. sent to Sir Hans Shane, Bart. 

 Pr. R. S. lo be communicated to the Royal Society. N° 42], p. 210. 



Dr. S.'s work will be in the form of a dictionary, that it may serve at the 

 same time for an index. He therefore was disposing in an alphabetical order, 

 the various kinds and characters, subjoining to each of them the proper species 

 hitherto observed in Swisserland, either by himself or by others, with the syno- 

 nymous names used by the diff^erent authors, which are again to be inserted in 

 their proper places, according to the order of the alphabet. He was adding, 

 and remarking, under each plant, whatever seemed to be wanting in their de- 

 scription by other authors, or anywise necessary for the fuller knowledge of 

 them, or applicable to medicinal or other uses. Besides other prints, there will 

 appear in the work itself those of Fuchsius in folio, he having purchased the 



