Differences of sea level

✍ Scribed by C.

• Book ID: 103090012
• Publisher: Elsevier Science
• Year: 1882
• Tongue: English
• Weight: 59 KB
• Volume: 114
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(82)90365-9

✦ Synopsis

Affraction of MetaL~ at a Distance.

143

Differences of Sea Level.--During a voyage to and from Campbell Island, M. Bonquet de la Grye made a series of observations upon the saltness and density of the sea-water. Many meteorologists have thought that there should be an intimate relation between the saltness of the ocean and the currents which traverse it, but processes of exact investigation have been hitherto employed only in laboratories and upon a limited number of samples. Mohr's process for the investigation of chlorides, which has been popularized by M. Roux, is not only exact, but in can be employed upon shipboard under all circumstances. It requires neither accurate weighings nor difficult precautions: the moment is nmrked at which a change of tint is made by the addition of bichromate of potash, and a simple reading upon a graduated tube, or counting the drops of the experimental liquid, is sufficient to give, with great accuracy, the weight of the chloride which is contained in a given quantity of water. By means of this process de la Grye has constructed a chart of the relative levels of the Atlantic Ocean between 15 ° and 45 ° north latitude.--Ann, de Chim. et de Phys., April, 1882. C.