1. C. Plinius Secundus (Pliny the Elder)
By: Abhishek Mullapudi

2. Background

3. NH
37 volumes
One of first investigations into nature
Index

4. Tides
Phase inequality
First recorded data

5. Tidal Phenomena Constant lunitidal interval Phase inequality
“Establishment of port”

6. Tidal Phenomena Daily tidal retardation Solstice vs. Equinox
Moon in Northern hemisphere

7. Tidal Phenomena
8 year tidal cycle
The issue

8. Your Turn to Evaluate Pliny
Ex.
Like Seneca before him, Pliny also noted that tides occur higher at equinoxes than solstices, and that the autumn equinox is larger than the spring equinox. The difference is that Pliny said that the spring tide is not as large as the autumnal tide. He did not elaborate further.
Did he offer new information, or repeat old information?

9. Recap of Pliny NH Tidal Phenomena Logic vs. Reasoning
Original vs. Derivative
Ports
Death

10. Sources
Eckenrode, T.R The Romans and their views on the tides (pp ). Rivista di cultura classica e medioevale XVII.
Murphy, Trevor “C. Plinius Secundus of Novum Comum.” In
Keyser and Irby. Encyclopedia of Ancient Natural Scientists: The Greek Tradition and Its Many Heirs with Paul T. Keyser. Routledge (2008).