CONCLUSION. 161 



yellow, and finally brown ; this change, and the 

 bitter taste which it acquires, is supposed to be 

 owing to the fogs which are very frequent in the 

 provinces where it is found. It is collected in 

 autumn by the inhabitants, who boil it in water, 

 and afterwards make it up into little cakes, in 

 which form it is brought to market. In order to 

 increase its weight, many are accustomed to mix 

 it with the resin obtained from another resi- 

 nous shrub, and in this state great quantities are 

 sold to ship-masters, who use it for paying their 

 vessels. 



Upon the branches of the wild rosemary is also 

 found a whitish viscous substance, in globules 

 of the size of a hazel-nut, containing a very lim- 

 pid oil, which proceeds from the shrub. These 

 glands serve for the habitation of a kind of cater- 

 pillar, which becomes transformed into a small fly, 

 with four brown wings, of the genus Cynips. 



The foregoing details will be sufficient to show 

 that we are indebted in no small degree to the 

 M 



