That which, in the constitution and course of nature or the law, noman can do or perform. See Klauber v. San Diego Street-Car. Co., 05 Cal. 353. 30 Pac.555; Reid v. Alaska Packing Co., 43 Or. 420, 73 Pac. 337. Impossibility is of the following several sorts:An act is physically impossible when it is contrary to the course of nature. Such animpossibility may be either absolute, i. e., impossible in any case. (e. g., for A. to reachthe moon.) or relative, (sometimes called “impossibility in fact,”) i. e., arising from thecircumstances of the case, (c. g