offeveral Species rf Pollem (yj 



"By a fmall addition of frefh brandy feme few arc excited a fecond 

 time, but with fainter movements. Prefently the liquid begins to 

 be obfcured, and in a few minutes the grains are moftly difperfcd 

 and decompofed, <ind the fpirit, exhaling, leaves a fort of extraft 

 on the glafs mixed with very minute undilTolved particles ; among 

 •which fonietimes appear a few unbroken grains, much changed, and 

 nowrefembling an empty bladder lying flat. 



2. Erica carnea. Anthers capfular, bearing the pollen on their 

 ■inner furface, and difcharging it by a brilk explofion from an aper- 

 ture on the fide next the piftil. If xhe Jligma be touched with a pin 

 at a certain period of the inflorefcence, it happens commonly that all 

 the anthers proje6l their pollen at once; and it may thus becoUecled 

 on paper. The proper time for this is when the Jligma is elevated 

 a little from -between the anthers. In fize and ftruiSlure this pol- 

 len nearly refembles the preceding, and is, in like manner, capable of 

 jmbibing water and difperfing with a rapid motion in fpirit. 



3. Refeda odorata. Mignonette. 



Unripe pollen, fniooth, egg-oblong, tranfparcnt, without fepta? 

 In water it expands to a fphere, and is a6led upon by fpirit as the 

 preceding. 



4. CciBus Jlagelliformis, Creeping Cereus. 



Anthers oblong, crumbling. Pollen of a large fize, compared witk 

 any others I have feen; in fhape refembling a plump grain of wheat, 

 white and diaphanous. It expands in water to a iTiape nearly fphe- 

 rical. The contadl of fpirit brings on a pearly opacity. The grains 

 imbibe it flowly, and during expanfion revolve on their axes with a 

 pretty regular motion, exhibiting a fpcclacle no lefs novel than de- 

 lightful. In the mean time, fome minute particles are feen to be 

 ejedled, and, the motion ceafing, the tranfparency returns, proceeding 

 from tbe furface to the centre. 



K2 Tf 



