Section 44C. The board may make such rules or by-laws, not inconsistent with law, as it may deem necessary in the performance of its duties. The board shall have a seal, and its members may administer oaths in the performance of its duties. The board shall have power to summon witnesses and to take testimony and require proofs concerning all matters within its jurisdiction. The board shall annually render to the governor a report of its proceedings, which shall include an itemized statement of all receipts and expenses of the board for the year.