“ The other ground stated as furnishing a special circumstance to show that complainant may suffer some irreparable injury if equity does not take jurisdiction,-viz., that the law is more favorable to insurance companies as administered in the Federal than in the state court, and therefore equity ought to take jurisdiction in this case, upon the ground of the diversity of citizenship,-cannot be regarded for a moment. ”

“ It was held that the company would have a perfect defense at law in an action by the holder upon the policy of insurance, and for that reason equity would refuse to take jurisdiction of an action to compel the delivery up and cancelation of the policy. ”

“ Where a party, if his theory of the controversy is correct, has a good defense at law to 'a purely legal demand,' he should be left to that means of defense, as he has no occasion to resort to a court of equity for relief, unless he is prepared to allege and prove some special circumstances to show that he may suffer irreparable injury if he is denied a preventive remedy.'
To the same effect are Home Ins. ”

“ Co. v. Morse, 20 Wall. 445, 22 L. ed. 365; and that case has been repeatedly approved. See Doyle v. Continental Ins. Co. 94 U.S. 535, 24 L. ed. 148; Barron v. Burnside, 121 U.S. 186, 30 L. ed. 915, 1 Inters. Com. Rep. ”