
94 U.S. 415 (1876)
PEOPLE
v.
COMMISSIONERS OF TAXES AND ASSESSMENTS.
Supreme Court of United States.

*416 Mr. Daniel D. Lord for the appellant.
Mr. Hugh L. Cole, contra.
MR. JUSTICE HUNT delivered the opinion of the court.
The relators complain that their shares of stock in the Gallatin National Bank are assessed at too large a sum. They appeal from the judgment of the Court of Appeals sustaining the determination of the commissioners of taxes, which fixed the taxable value of such shares at $59 each, whereas the par or nominal value of such shares is $50 each.
Many grave questions were discussed by the council upon the argument, to which we do not think it necessary to refer. We place our judgment upon a single ground.
The laws of the State of New York provide that shares of stock like those we refer to shall be assessed "on the value" of the shares, and at "their full and true value, as they (the assessors) would appraise the same in payment of a just debt due from a solvent debtor," deducting the proportional value of the real estate owned by the bank. 2 Stat. N.Y. 1866, p. 1647, c. 71; 1 R.S.N.Y. 393, sect. 17.
The assessors were justified, under this authority, in fixing the value as we have stated. The appraisement included the reserve fund, which is as much a part of the property of the bank, and goes to fix the value of shares, equally as if it were not called by that name, but remained as a part of the *417 specie, bills discounted, or other funds of the bank, undistinguished from the general mass.
The forty-first section of the act of Congress of June, 1864, provides that the States may tax the shares of national banks, subject to two restrictions: 1st, That this taxation shall not be "at a greater rate than is assessed upon other moneyed capital in the hands of individual citizens of such State;" and, 2d, "that the tax so imposed ... shall not exceed the rate imposed upon the shares of any of the banks organized under the authority of the State where such association is located." 13 Stat. 112. In Hepburn v. The School Directors, this court decided that, in making assessment of bank shares by this authority, it was competent to assess them at an amount above their par value. 23 Wall. 480.
But the relators insist that, by the act of the legislature of the State of New York, passed March 9, 1865, it was enacted that the shares of a bank could not be assessed at an amount greater than the par value thereof, and that such statute created a contract with the banks organized under the same, which could not be altered by a subsequent legislature. Hence it is argued that the act of 1866, authorizing such shares to be assessed at a rate which may exceed their par value, is a law impairing the obligation of a contract, and is void.
The section of the statute of 1865 referred to is as follows, viz.: 
"SECT. 10. All the shares in any of the said banking associations, organized under this act, or the act of Congress, ... held by any person or body corporate, shall be included in the valuation of the personal property of such person or body corporate or corporation, in the assessment of taxes in the town or ward where such banking association is located, and not elsewhere, whether the holder thereof reside in such town or ward, or not; but not at a greater rate than is assessed upon other moneyed capital in the hands of individuals of this State: Provided, that the tax so imposed upon such shares shall not exceed the par value thereof; and provided further, that the real estate of such associations shall be subject to State, county, or municipal taxes, to the same extent, according to its value, as other real estate is taxed."
*418 Had this been a valid statute, we might have been called upon to discuss the point raised. But it was held in Van Allen v. The Assessors, 3 Wall. 573, that this statute was fatally defective, in that it did not contain a proviso that the tax thereby authorized to be imposed should not exceed the rate imposed upon banks organized under the authority of the State. The system of taxation devised by the statute of 1865 was adjudged to be illegal and void. The clause now laid hold of by the relators was simply a proviso or qualification of that system. It necessarily fell with it. When the main idea was thrown out of existence, the subordinate parts, which were adjuncts of and dependent upon the main theory, ceased to exist. There never was, legally speaking, any such proviso or enactment as the relators claim the benefit of. Of course, there could be no such thing as a violation of contract contained in a proviso which never existed. Warren v. The Mayor, 2 Gray, 98, 99; Sedgwick on Statutes, 413, 414 (ed. of 1874).
Judgment affirmed
