Page:The Anatomy of Tobacco.pdf/152

 in the open air and indoors. The open air or hypæthral division may be further divided into celestial (in the air), terrestrial (on land), and aqueous (on water). Now it is possible to smoke in the air in two ways—in a balloon and out of a balloon, which last, though it is practicable and, perchance, pleasurable, I do not think has ever been accomplished, and this is doubtless due to the mind being in such cases taken up by the consideration of other matters. It will be seen that the terrestrial member is not further subdivided, which omission is not to be imputed to inability or ignorance on my part, but to an unwillingness to occupy the space that would be required, any further subdivision amounting to a description of the habitable world. The aqueous member, however, is here fully partitioned into its several sections, all of which are too commonly known to require particular discourse. I will, nathless, observe that if any one should sit in a boat-house on the shore of a Scotch loch through which a river flows into the