Henry C. Adams

Capitolo 14

the tides of three days on a chart, changing him/it instead every day.
When the diagrams are taken of, the lines that represent the
levels of water should be above layouts to a continuous strip of
flax that traces, so that the variations can be sights to a look
additional lines should be you draw, on the exposure of tracing the time to
what the changes of the moon happen.

Fig tree. 5 are a reproduction to a to staircase redoubt of actual record
taken one period of eighteen days that the shows true
aspect of the diagrams when it traced on the continuous strip.


These observations show the very small difference among the
spring and tides of neap, and it is interesting as pointing out the
the shakiness to base general deductions on data they got
during one limited period only. To the duration of the tides in spring
to the beginning of June conditions were not favourable to
great tides, as even if the moon was approaching himself/herself/itself to its perigee,
its declination had come to almost his/her northern limit and the
declination of the sun was 22 In The first quarter of the moon
coincided a lot from near with the passage of the moon on the
equator, so that the neapses would be greater than accustomed to. To the
period in the spring:  tides, around the middle one of June even if
the time of full moon corresponded with its southernmost
declination, she was approaching himself/herself/itself to his/her apogee and the
declination of the sun was 23 16' N., this way that the tides are able
both more lower part how usual.

To assure accurate observations the chosen of position,
for the indicator of level of tide you/he/she should be in deep water in the immediate one
neighborhood of the place in quo, but so that it is not stricken from
the waves from momentary vases. Motion of wave is more felt where
the craft is in a little deep water. A bench or the wish of wall of bench
probably is very convenient, but to get record of
the whole series of the tides is clearly necessary that the
craft should not be gone away water dry land low. In of the examples