Severn _v._ Olive. Mr. Serjeant _Lens_ appeared to show cause against a rule obtained in this case. The case arose out of the well-known one of Messrs. _Severn_, _King_, and Co., sugar-refiners, against some of the Insurance Companies, for losses sustained in the destruction of their extensive premises, near Whitechapel. It will be recollected, that in the two trials which arose out of that event, a great number of scientific men were examined on both sides as to the result of experiments made by them in the process of boiling sugar by means of heated oil. The verdict in both cases, as is known, was for the plaintiffs. In the bill of costs, sent in to the defendants, charge was made for the attendance of the learned chymists, who gave evidence for the plaintiffs, and also for their loss of time and trouble in making those experiments. Other charges were made for the expense of the experiments themselves. The prothonotary who taxed the costs allowed both the charges in principle, though not to the extent set down in the bill. It was in consequence of having made those allowances that a rule had been granted to show cause why he should not review his taxation of costs. Mr. Sergeant _Lens_, in showing cause against the rule, contended that the allowance for loss of time to Dr. _Thomson_ was a very natural and just one. Dr. _Thomson_ was Professor of Chymistry in the University of _Glasgow_, and had been obliged to come up to _London_ three times, at considerable inconvenience and expense, to give evidence in the case. He had been at great trouble in making and superintending experiments, and the prothonotary, in taking the costs, had allowed a reasonable sum for the whole. It was the same in the cases of the other scientific gentlemen who attended. The Prothonotary here observed, that he considered the allowance for expenses and loss of time of Dr. _Thomson_ and other gentlemen as very just. It was usual to allow for loss of time in such cases.