Radiocarbon date reports have been scanned in multi-page PDF files.
History / Biographical
North Lauder Radiocarbon Date report by IsoTrace Laboratory for Atkinson II site #TO-11882.
Radiocarbon dating
The technique of radiocarbon dating was developed by Willard Libby and his colleagues at the University of Chicago in 1949.
Radiocarbon dating is used to estimate the age of organic remains from archaeological sites. Organic matter has a radioactive form of carbon (C14) that begins to decay upon death. C14 decays at a steady, known rate of a half life of 5,730 years. The technique is useful for material up to 50,000 years. Fluctuations of C14 in the atmosphere can affect results so dates are calibrated against dendrochronology. Radiocarbon dates are calibrated to calendar years.
Dates are reported in radiocarbon years or Before Present. Before Present refers to dates before 1950. The introduction of massive amounts of C14, due to atomic bomb and surface testing of atomic weapons, has widely increased the standard deviation on all dates after A.D. 1700 causing these dates to be unreliable.
Accelerated mass spectrometry can more accurately measure C14 with smaller samples and can date materials to 80,000 years.
Scope and Content
Sub sub series contains radiocarbon dates from: Atkinson site and Flintstone Hill.
A collection of forms of practice and pleading in actions, whether for legal or equitable relief : and in special proceedings : prepared with reference to the code of procedure of the State of New York, and adapted to the present practice in the states of Ohio, Indiana, Iowa, Wisconsin, Minnesota, California, Oregon, Missouri, Kentucky, and Alabama, and the island of Newfoundland
The Practical speller : suitable for high and public schools : a series of graded lessons containing the words in general use, with abbreviations, etc., words of similar pronunciation and different spelling ; a collection of the most difficult words in the language ; and a number of literary selections, which may be used for dictation lessons, and committed to memory by the pupils
"Authorized by the Council of Public Instruction, Quebec ; authorized by the Council of Public Instruction, Manitoba ; authorized by the Council of Public Instruction, British Columbia"
[v.2] has part VI (p. 125-157) : Etymology ; authorized for use in the Schools of North-West Territories