Read it through once

Another very interesting Eastern plant sometimes seen in old-fashioned country gardens in Britain is the "Burning-bush" (_Dictamnus fraxinella_). Like a great many of these half-desert plants, it is full of an acrid, ethereal, odorous substance. On a calm, hot summer's day, this material exudes from the leaves and surrounds the plant with an invisible vaporous atmosphere. Such an atmosphere probably assists in preventing the water from evaporating or being transpired from the leaves.[52]