164 Mass. 532 | Mass. | 1895
The plaintiff’s counsel asked an expert witness this question: “How, suppose a bolt occupying a position like this bolt, in which there is this constant sidewise jar on it, — I will ask you whether or not a steel bolt is a proper bolt for the place? ” The question was ruled out on the defendant’s objection, and the plaintiff excepted. The question assumed as an absolute fact in the case, and not as a hypothesis, that there was a constant sidewise jar on the bolt, and then asked the witness to answer the precise question which was the issue before the jury. Whether there was such a jar was in dispute. The weight of evidence tended to show that the greatest strain
The witness was then asked, “ Is steel a proper material to use under the circumstances attending the use of this bolt in a machine?” The subject of the inquiry was pertinent to the issue, and the witness might properly give his opinion in regard to the relative fitness of steel and iron or other metals for use in the construction of a bolt for a place like this. But he could not give an opinion which included his views upon any conflicting evidence. He was testifying as a person possessed of special knowledge derived from study and experience. To make his testimony valuable and entirely intelligible, it was necessary that he should state to the jury upon what actual or hypothetical facts he was giving an opinion, and what his opinion was upon the facts supposed. The question called for the consideration of two different subjects: first, the circumstances attending the use of the bolt; and, secondly, the fitness of steel for use under different conditions. The evidence tends to show that there was a difference of opinion among the witnesses in regard to these circumstances in reference to the qualities of metals in different combinations which would best meet the requirements of the use, and the judge in his discretion might well refuse to permit the witness to answer a question which neither required him to state what his opinion was in regard to the requirements of the place where the bolt was, nor asked what he thought of the relative fitness of steel and iron to meet the different kinds of requirements. No question addressed to the opinion of the witness in any particular matter of science or expert knowledge was excluded. In determining whether a question is so framed as to bring to the aid of the jury matters purely of expert opinion in such form as to be intelligible, something must be left to the presiding judge, who often has before him facts which cannot well be presented in writing to an appellate tribunal, and whose finding upon any doubtful question of fact cannot be revised by this court. Moreover, in replying
The only other exception is to the refusal of the judge to permit the plaintiff to ask this question, “ Do you know whether or not any cast iron bolt came with those two last machines, — I mean wrought iron?” The machine on which the plaintiff was working was called the Cranston Under-cut Machine. The evidence tended to show that its weight was 6,300 pounds; that there were from seventy-five to one hundred bolts in it; that about ninety per cent of the paper manufacturers in this country use these machines; and that of the different sizes there were about one hundred in use by the paper manufacturers in the city of Holyoke. Charles Cranston, the inventor of the machine, was called by the defendant as a witness. He testified that he was the manufacturer of these machines; that they first came into use about 1866, and had been much improved since; that six or seven years ago he sold the defendant the machine on which the plaintiff was working; that it was of the most improved kind; that the defendant had four of them in all; and that all the bolts in these various machines which he had built and sent out for the last ten years have been of machinery steel, the same as this bolt that broke. He testified at length as an expert, to the effect that he believed this kind of bolt to be better and stronger than any other. In cross-examination he testified that before the accident he never heard of a bolt breaking at this place ; that he sent a new machine to the defendant, but could not give the date, and could not tell whether it was before or after the accident; that he did not know whether he sent up an iron bolt for that or not, but did not believe he did; that he did not recollect every bolt with sixty or eighty men at work, and could not see everything that went out of the shop; that he did not think he sent it full size (referring to the shape of the bolt that broke, which is cut down in one part from its largest size to extend the shoulder); that
The sale of the last machine by Cranston to the defendant was introduced in cross-examination, and was immaterial to the issue. Whether all of its bolts were of steel or some of them were of iron was also immaterial. The plaintiff was therefore so far bound by the answers made by Cranston in cross-examination in regard to this matter that he could not introduce testimony from other witnesses to show that they were false for the purpose of contradicting this part of his testimony. Eames v. Whittaker, 123 Mass. 342. If it were a fact that either before or after the accident the defendant purchased another machine which had an iron bolt in the place where this one broke, that would not be competent on the main issue to show negligence. Menard v. Boston & Maine Railroad, 150 Mass. 386. Downey v. Sawyer, 157 Mass, 418, 421. It is contended that, because the witness Cranston testified in direct examination that all these machines which were in general use all over the country had been made at his shop, and that they were all made with bolts of steel like this which broke, and that he had not made a bolt of iron for one of these machines for many years, and that he thought steel the best material for such bolts, it was competent to introduce the answer to this question to contradict him in the substance of his testimony. To do this the plaintiff called his own brother, who had already given important testimony, in which be had been contradicted by other witnesses, and who was a workman in a paper mill, and who, so far as appeared, had no knowledge of iron except what he had derived from tending one of these machines, and asked him the question which was excluded. An expert had already testified that in his opinion “it would be
Exceptions overruled.