Rings per inch, per cent sap, and per cent summer wood will be measured.
They will then be air-dried in the laboratory to constant weight, and afterward oven-dried at 100 deg.C.

(212 deg.F.), when they will again be weighed and measured.
VOLUMETRIC SHRINKAGE AND SPECIFIC GRAVITY _Specimens_ _Selection and preparation_: Four 2" X 2" X 6" specimens will be cut from the mechanical test sticks of each "_d_" bolt; also from each of the composite bolts used in getting a comparison of green and air-dry.

One of these specimens will be taken from near the pith and one from near the periphery; the other two will be representative of the average growth of the bolt.

The sides of these specimens will be surfaced and the ends smooth sawn.
_Marking_: Each specimen will retain the shipment, piece, and stick numbers and mark of the stick from which it is cut, and will have the additional mark "_S_." _Manipulation_: Soon after cutting, each specimen will be weighed and its volume will be determined by the method described below.

The rings per inch and per cent summer wood, where possible, will be determined, and a carbon impression of the end of the specimen made.