be made shall be determined from time to time by a joint assessment of the Collector of Internal Revenue and Director of Forestry, the same to be published for the information of th e public in the Official Gazette. Where the value of any forest product included in this section is not determined and published in the manner specified, such product may be taken free of charge. 

[2339-91.] 

S ECTION 1672 . Charges for Stone and Earth Taken from Forests . — For stone or earth taken from the public forests and forest reserves such charges shall be made as may be fixed in particular cases by the Director of Forestry, with the approval of the Secret ary of the Interior. 

[2339-92.] 

S ECTION 1673 . No Charge for Products Lawfully Removed Under Gratuitous License . — No charge shall be made on forest products removed in conformity with the terms of a gratuitous license of the Bureau of Forestry and in compliance with the law and the regul ations of such Bureau. TIaCcD 

[2339-93.] 

S ECTION 1674 . Gratuitous Licensees Subject to Regulations of Bureau of Internal Revenue . — Gratuitous licensees to cut first-group timber under license from the Bureau of Forestry must comply with the regulations of the Bureau of Internal Revenue in regard  to the removal of such timber and shall submit on the proper forms full invoices showing the amount cut by them. 

[2339-94.] 

S ECTION 1675 . Time for Payment of Forest Charges . — Except as hereinbelow provided, the charges for forest products shall be payable at the time of the removal of the same from the forest. 

With the approval of the Collector of Internal Revenue, lumber may be removed from a sawmill situated on a licensed cutting area upon the giving of a bond conditioned for the monthly payment of the charges due upon the output of such mill. He may also auth orize the shipment of forest products under auxiliary invoices without the prepayment of charges, when the same are shipped by sea in steam or sailing vessels and the proper charges are secured by proper bonds. 

[2339-95.] 

## ARTICLE IX 

