"August 8th."As soon as the weakness was passed, she followed Leona Lalage. She heard the latter fumbling with the sash of the drawing-room window, she felt the sudden rush of air. The owner of the house had barely reached the garden before Hetty was after her. It was all for Gordon's sake, she told herself; for him she would do anything."I am a Netherland jour...."The corner house, the mystery--everything was now forgotten. Bruce called for hot water, he made a sign for it, he simulated the mixing of mustard in a pot. Fortunately his companion's native intelligence was equal to the strain. She vanished with a quick nod of her head.In constructing patterns where it is optional whether to employ cores or not, and in preparing drawings for castings which may have either a ribbed or a cored section, it is nearly always best to employ cores. The usual estimate of the difference between the cost of moulding rib and cored sections, as well as of skeleton and cored patterns, is wrong. The expense of cores is often balanced by the advantage of having an 'open mould,' that is accessible for repairs or facing, and by the greater durability and convenience of the solid patterns. Taking, for example, a column, or box frame for machinery, that might be made either with a rib or a cored section, it would at first thought seem that patterns for a cored casting would cost much more by reason of the core-boxes; but it must be remembered that in most patterns labour is the principal expense, and what is lost in the extra lumber required for a core-box or in making a solid pattern is in many cases more than represented in the greater amount of labour required to construct a rib pattern.