I think, therefore, that the lower shelf must have been a Constructional contrivance, to assist in keeping the standards in their places.
"The Care of Books"
John Willis Clark
The city was unpleasantly hot and the breeze that swept its streets blew clouds of sand and cement about, for Montreal is subject to fits of feverish Constructional activity and on every other block buildings were being torn down and replaced by larger ones of concrete and steel.
"Blake's Burden"
Harold Bindloss
Obviously, it is impossible to give full details of all constructions in a small text-book; but it is easy to give an example of the Constructional methods employed in the making of almost any piece of light blown-glass apparatus, and these methods should prove of special value when apparatus of a new pattern has to be evolved for the purposes of research.
"A Handbook of Laboratory Glass-Blowing"
Bernard D. Bolas