XV 



half that quantity of ethereal oil of turpentine, 

 and a pint of the camphorated spirit of wine. 



The finest collections have been ruined by 

 small insects, and it is impossible to have our 

 cabinets too secure. Such insects as are thus 

 attacked may be immersed in spirit of wine, 

 without injuring their fine plumage, or colours ; 

 and afterwards let them be sprinkled about 

 their bodies and insertions of the wings with 

 the solution above mentioned. We may dis- 

 solve a much larger proportion of sublimate, 

 by means of a saturated solution of crude sal- 

 ammoniac in water : an ounce of the sal am- 

 moniac solution will dissolve twenty scruples 

 of the sublimate. 



These observations and directions respecting 

 insects, may, perhaps, be the means of ex- 

 citing the curiosity of some, whose inquiries 

 after this part of natural history will be amply 

 compensated by the frequent opportunities of 

 enlarging their knowledge, as there is scarce 

 any part of the surface of this globe, scarce a 

 tree, a shrub, or a plant; an animal either living 



