This home movie documents the Ray family 's visit to Puerto Rico in April 1978 and includes footage of a live stage performance, views of the city, and peacocks.

This home movie documents the Ray family 's visit to Puerto Rico in April 1978 and includes footage of the family on the beach.

Abstract: The principal chemical, physical and biological characteristics, as well as the hydrology of Laguna Tortuguero, Puerto Rico, were studied from 1974-75. The lagoon, with and area of 2.24 square kilometers and a volume of about 2.68 million cubic meters, contains about 5 percent of seawater. Drainage through a canal on the north side averages 0.64 cubic meters per second per day, flushing the lagoon about 7.5 times per year. Chloride and sodium are the principal ions in the water, ranging from 300 to 700 mg/L and 150 to 400 mg/L, respectively. Among the nutrients, nitrogen averages about 1.7 milligrams per liter, exceeding phosphorus in a weight ratio of 170:1. About 10 percent of the nitrogen and 40 percent of the phosphorus entering the lagoon is retained. The bottom sediments, with a volume of about 4.5 million cubic meters, average 0.8 and 0.014 percent nitrogen and phosphorus, respectively.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The Flying Wallendas perform as scheduled Wednesday night at the Pan America Circus in San Juan, Puerto Rico, despite the fatal fall of Karl Wallenda in the morning as he attempted to walk a tight rope between two tall buildings."