( 1^-2 ) 



bean where the young plant is formed ; and here that part which 

 would have grown up into a ftalk or fleni, is cut tranfverrely. 



I liave alio laid coffee beans for fome time in water, in order more 

 eafily to take out the young plant, and to give a drawing of it 

 from the microfcope. This young plant, fo magnified, is fliewn in 

 Plate V. /^. 8. P O R S T V. At O R S T V are three compleatly 

 formed leaves, and I could fee the vellels and globules whereof they 

 confifted very di(lin6lly in fome of them, efpccially where the leaves 

 did not lie two or three together. A few of thefe globules, com- 

 pofing the leaf, are reprefentcd in this figure, at letter T. That 

 part where the root and Item would fhoot forth is fliewn at PQV. 



After this young beginning of the plant had flood fome months 

 before the microfcope, I perceived that the leaves were covered with 

 a fort of mouldincfs. This ajjpearance ufually begins by a kind of 

 flalk ; from whence a globule proceeds, and out of that many more, 

 exhibiting together the likenefs of foliage, but the moirldinefs I am 

 now fpcaking of, had a very different appearance, being much more 

 in the fliape of flowers, as is fliewn \i\/ig. 8, at a a a a. But I have 

 often feen this mouldinefs, even on tiie dead bodies or parts of the 

 bodies of infe6ts, and alfo on the fhell of a filk-worm's egg. 



Some of thefe beans I placed in a proper chymical veflel over the 

 fire, and obferved, that in the roafting, or burning them, a great 

 great quantity of oily fubftance. and alfo of watery moiflure was 

 expelled. The roafled beans I broke into fmall pieces, and after 

 jnfufing them in clear rain water, I iuffered the water to evaporate, 

 after pouring it off from the grofl'er parts of the coffee, and then I 

 difcovered a great number of oblong faline particles of different fizes, 

 (but mofl of them exceedingly minute ) all of them with fharp points 

 at the ends, and tliick in the middle. 



Afterwards, I took fome of the coffee beans in the fame flate they 



