In the Law of Evidence. A witness may refresh his memory by referring to a written instrument, memorandum, or entry in a book, and may be compelled to do so, if the writing is in court: 20 Pick. 441; 11 S. C. 195; see 63 Hun 439; 31 Fla. 196; but the memorandum is not competent evidence to prove the facts stated, in it- self; 96 Cal. 462; see 40 Minn. 325; nor is the memorandum admitted in evidence merely because the witness uses it to re- fresh his recollection; 130 U. S. 611. The writing need not be an original or made by the witness himself, provided, after inspect- ing it, he can speak from his own recollec- tion, not relying wholly upon the writing: 10 Ν. Η. 544; 14 Cent. L. J. 119: 10 N. C. 167; 39 Mich. 108; 87 Ga. 393; 33 Neb. 150; 53 Minn. 360. And a writing may be re- ferred to by a witness, even if inadmissible as evidence itself; 8 East 273; 45 Ill. App. 368. A witness may refer to a writing which he remembers having seen before, and which he knew at that time to be cor- rect, although he has no recollection of the facts contained therein; so, when he neither recognizes the writing nor remembers any- thing therein, but yet, knowing it to be genuine, his mind is so convinced, that he is enabled to swear to the fact, as where a banker's clerk is shown a bill of exchange with his own writing upon it; Whart. Ev. § 518; 1 Greenl. Ev. SS 436-439. See 1 Houst. Cr. C. 476; 76 N. Y. 604; 18 Hun 443; 39 Mich. 405: 25 Minn. 160; 64 Vt. 511. The admission in evidence of a memo- randum made by the witness is error if it does not appear that the witness could not have testified from memory: 47 Minn. 403. See 67 Hun 365 A memorandum book, out of which some of the entries bearing on the cause of action have been torn after the action was com- menced, is not admissible in evidence: 58 Va. 695. Memoranda, if admissible at all as independent evidence, cannot be admit- ted when it is not shown that they were made at the time of the transactions re- ferred to, or why they were made; 151 U. S. 149. A witness may refresh his memory by reference to a copy of a memorandum made by him, only where it is first shown that the copy is correct; 96 Ala. 363. In Insurance. A clause in a policy limiting the liability of the insurer. Policies of insurance on risks of trans- portation by water generally contain ex- ceptions of all liability from loss on certain articles other than total, or for contribu- tions for general average; and for liability for particular average on certain other arti- cles supposed to be perishable or specially iiable to damage, under specified rates on each, varying from three per cent. to twenty, and for any loss whatever under three or five per cent. Some seventy or eighty articles are subject to these excep- tions of particular average in the divers forms of policy in use in different places; 1 Phill. Ins. § 54, n. These exceptions were formerly introduced under a "memoran- dum," or "N. B.," and hence have been called "memorandum articles," and the body of exceptions the "memorandum." The list of articles and rates of exceptions vary much in different places, and from time to time at the same place; 19 N. Y. 272. The construction of these exceptions has been a pregnant subject in jurisprudence. 1 Stark. 436; 3 Campb. 429; 4 Maule & S. 503; 5 id. 47; 1 Ball & B. 358; 3 B. & Ad. 20; 5 id. 225; 4 B. & C. 736; 7 id. 219; 8 Bingh. 458; 16 E. L. & Eq. 461; 1 Bingh. N. C. 526; 2 id. 383; 3 id. 266; 3 Pick. 46; 5 Mart. La. N. S. 289; 2 Sumn. 366; 16 Me. 207; 31 id. 455; 1 Wheat. 219; 6 Mass. 465; 15 East 559; 9 Gill & J. 337; 7 Cra. 415; 8 id. 84; 1 Stor. 463; Stevens. Av. p. 214; Benecke, Av. by Phill. 402; 3 Conn. 357; 19 Ν. Υ. 272; [1893] Prob. 209; id. 164.