45. Certain kinds of timber to be deemed property of Government until title thereto proved, and may be collected accordingly

46. Notice to claimants of drift timber

47. Procedure on claim preferred to such timber

48. Disposal of unclaimed timber

49. Government and its officers not liable for damage to such timber

50. Payments to be made by claimant before timber is delivered to- him

51. Power to make rule and prescribe penalties