While some merchants only sell gift cards in specific denominations, other merchants allow the purchasers to designate the amount of the gift as long as it falls within the merchant's minimum and maximum allowable amounts.
It was agreed that "lay assistants" were allowable, but only in cases of necessity.
The act had always been accounted allowable in the school, if circumstances should call for it: indeed, the first three teachers had found such circumstances.
As has been remarked above, the terror of postbaptismal sin and the fact that only one restoration was allowable influenced many as late as the 4th century to remain catechumens all their lives, and, like Constantine, to receive baptism on the deathbed alone.
Given a certain allowable heat transmission, the principal points to be considered in connexion with insulation are, first cost, durability, weight and space occupied, the two last named being specially important factors on board ship. No exact rules can be laid down, as the conditions vary so greatly; and though experiments have been made to determine the actual heat conduction of various materials per unit of surface, thickness and temperature difference, the experience of actual practice is at present the only accepted guide.