For the appellant it is said that, although catch-points would certainly be effectual to stop runaway rolling-stock, there were such practical objections to them that a reasonable man in the position of the appellant would not have installed them. Not that they would have been excessively costly. A sum of £200 would have covered the cost, according to the evidence; and the interruption to the use of the line could hardly have been great, for it took only a day to put in the switch points at the Crofton junction in 1936. But it was said, particularly by a Mr. Proctor, at one time Traffic Inspector, and later Superintendent, of the South Maitland Railway Pty. Ltd., that to put catch-points in a single "main" line, as he called the appellant's line, would be contrary to railway practice, as it would create a hazard for traffic coming down the gradient. He thought it would be "quite impracticable", meaning, so far as one can gather, that catch-points would be a source of danger to regular traffic on the line and would be open to the economic objection that they would cause every train coming down from the Crofton loop to lose a great deal of time - as much as twenty minutes he suggested - in slowing up and stopping, waiting for a man to close the points, proceeding slowly past the points, and stopping again to pick up the man. But he seems to have been much influenced in his view by the supposition that if catch-points were reasonably required to protect the Lambton Road level crossing they must reasonably be required to protect the "thousands of level crossings all over the country", or at least at many comparable places. He does not appear to have given weight to the facts that only two trains a day, one from the appellant's mine and one from the Crofton mine, came down the line each day, and that even while there were no catch-points the constant practice was to stop for water at a point shortly before the level crossing was reached, and to proceed across the Lambton Road at a walking pace. An important consideration, which by itself was sufficient to justify a rejection of Mr. Proctor's opinion as to practicability, was that within a fortnight after the fatality which gave rise to the ligitation the appellant actually installed catch-points in such a position on its line as to prevent the occurrence of another tragedy, and these catch-points had remained a feature of the line ever since. That, of course, could not be regarded as an admission by the appellant that reasonable care in the management of the line required such a provision, and the trial judge so instructed the jury. But it had significance nevertheless, for the trial took place four years and more after these points were let into the line, and although the appellant's regular engine-driver and fireman-shunter were called as witnesses nothing in the evidence suggested that the difficulties which Mr. Proctor raised had proved important in practice. Even apart from this, however, the jury was entitled to discount Mr. Proctor's evidence as giving insufficient attention to the special requirements of the particular locale, as exaggerating the loss of time involved in the negotiation of catch-points by trains in the ordinary use of the line, and as giving undue weight to the possibility of derailments being caused by trains accidentally over-shooting the catch-points in the normal operation of the line. It seems nothing to the point that according to Mr. Proctor railway practice is to have catch-points to protect main lines only, and not on main lines themselves. If their provision may be a reasonable precaution for the protection of a main line, it is difficult to see why the view should not be open to the jury that in the situation that existed on the appellant's line a similar provision was a reasonable precaution for the protection of the Lambton Road level crossing. And the absence of catch-points on main lines to protect level crossings was explained by Mr. Bone, a retired Government railway rolling-stock inspector, as attributable to the fact that on such lines trucks are always coupled to an engine.