Section 4. It shall be the duty of the president or cashier of every bank or savings institution, incorporated under the laws of this commonwealth or of the United States and doing business in this commonwealth, failing to pay in the six mill tax as aforesaid, to make report in writing to the auditor general on or before the twentieth day of June in each year, stating specifically the amount of capital stock and the amount paid in, a full and complete list of the shareholders of such bank or savings institution, with their residence and number and par value of shares of stock held by each person respectively, value of said stock in the market where such bank is located during the year ending with the twentieth day of June, which said report shall be verified by the oath of the president or cashier, taken before some officer authorized to administer oaths; and the said president or cashier shall also furnish a duplicate original of said report to the commissioners of the proper city or county in which such bank or institution is located, to be used by them for the purpose of assessing all taxes against said shareholders. The auditor general shall have power to inquire into the value of such stock, and either abate or increase the assessment as may be just. If the said bank officer shall neglect or refuse to furnish the reports aforesaid as above required, it shall be the duty of the auditor general to require the said officers to appear before him in person with the books and accounts of the said bank or savings institution for interrogation and examination, and the auditor general shall have power to issue subpoenas and attachments, to be served by any constable or sheriff, and to compel the attendance of such bank officer and the production of such books and papers as he may deem necessary to make a correct list of the shareholders, with their residences and the number and value of their shares; and the said auditor general may settle an account in the usual mode against the individual shareholders for the state tax of four mills and proceed to collect the same according to law, and he shall also transmit the lists and assessments made by him to the commissioners of the proper cities and counties to be used by them in assessing taxes against the said shareholders.