Statistics for occurrence #1 of “Boston harbor” in chapter 1, entry submarinearmor of Knight's Mechanical Encyclopedia:
...the ship.
A flexible tube was connected to an air-pump above, and admitted air to the helmet.
A sinking-weight of 90 pounds was attached to his person.
A race in submarine armor took place in Boston harbor on the 4th of July, 1868.
The course was 2,100 feet, reaching from Long Wharf to the Cunard Docks on the East Boston side.
Each diver had a submerged direction-line, and each arrived safely, bein...
| Max. Freq. | Min. Freq. | ||||||
|---|---|---|---|---|---|---|---|
| Entity | Corpus | Doc | Corpus | Doc | |||
| † | Boston Harbor (Massachusetts, United States) | 627 | 4 | 1 | 0 | 0 user votes | |
| Boston Harbor (New Hampshire, United States) | 0 | 0 | 0 | 0 | 0 user votes | ||
| Boston Harbor (Washington, United States) | 0 | 0 | 0 | 0 | 0 user votes | ||
| Boston Harbor (Washington, United States) | 0 | 0 | 0 | 0 | 0 user votes | ||
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.