72 PEARL SHELDON 
sible, so that the few readings made there are unreliable, but they 
are mostly to the north. On the eastern side of the lake the first 
area north of the axis and the first three in Salmon Creek show no 
readings whatever to the south, though the most northerly of the 
three shows a few zeros. Out of 61 readings at the fourth locality 
only one is to the north. There are a few zeros and the rest are to 
the south. Evidently there is a sharp reversal of the hade between 
the third and fourth localities. Because of a break in the rock 
wall at this point the transition only appears in the few variable 
readings at the adjacent localities. 
On the western side of the lake no readings to the south appear 
for three-fourths of a mile north of Willow Creek. Then after an 
interval of transitional variable hades the readings are all to the 
south as far as Taughannock Point. The observations from the 
Taughannock gorge are not reliable for hade. Those in the lower 
part of the gorge are mostly from outcrops of slight vertical. expo- 
sure, and near the falls (locality 2) the large amount of faulting and 
recent slipping make the readings untrustworthy. The hades just 
north of Willow Creek are small and are unusually uniform numeri- 
cally. Between Willow and Taughannock creeks the reversal of 
hade takes place about where the dip of the beds changes from a 
strong dip to the north to horizontal. ‘The steeper dip is resumed 
near Taughannock Point. On the eastern side of the lake a hard 
layer of rock was found to be nearly horizontal at the place where 
the hade of the joints is to the south but the variation in dip of the 
rocks was not traced. Evidently the sharp change of hade at the 
edge of Ludlowville is in a syncline. 
Thus it appears that, in general, the inclination of the strike 
joints is in the same direction as the dip of the rocks or rather is 
such that, if the planes of the joints were produced, they would 
meet above anticlines and below synclines. The better developed 
the joints and more uniform the hade the more nearly true this is. 
Even folds not strong enough to reverse the direction of dip reverse 
the joints. 
Drip Jornts.—Next in importance are the dip joints. In the 
upper Fall Creek gorge there is a strong set of joints nearly at right 
angles to the strike set. In most of the other localities it was found 
