Page 17 - 4925
P. 17
3 Petroleum is optically active — that is, it is able to rotate the plane of polarized
light.
4 When crew members are ready to add the joint to the drill string as the hole
deepens, they add it from the mousehole.
5 The inorganic theory of the origin of petroleum makes it necessary for the oil and
gas to have migrated great distances to be found in the places they now occupy.
16