(Note).—Return observations were made only at the camp of the Fly Club. Between 11 a.m. and 9 p.m., no change occurred in the barometer.
The Tribune report, however, indicates a rise on this date of .07 between 7 and 11 a.m. If such a change was felt in this region, then the calculated height of the mountain is too low by at least 60 feet. On the other hand, a height given by railway survey in this vicinity, (Johnson’s Mill) near the camp, seems to confirm the figures given here.
Also, the height of Helsinger Notch, taken incidentally on this excursion, was estimated at 2660 feet. Guyot makes the Notch 2677 and the summit of Slide Mountain 4205 feet.
The height of the base at Neversink was established by four observations, between New York Bay and this base, and was confirmed by comparison with the height of the railway track at Liberty, six miles south-west.
Neversink to Blue Mountain,
August 18, 1880.
| Time. | Bar. Readings | T. | Cor. Rd’g. | Ht. Tab. I. | |
|---|---|---|---|---|---|
| Neversink. | 10:30 p.m. | 28.90 | 60° | 28.87 | 1941 |
| Blue Mt. | 3 p.m. | 27.47 | 60° | 27.47 | 3295 |
| Neversink | 6” | 28.85 | 64° | ||
The corrected reading would be 28.875, if the second reading had been midway in point of time between the first and last.
This mountain is in Ulster Co., N. Y. Long. 74° 35 W, and Lat. 41° 52 N.