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Results for Washtenaw
Check for portfolio Record Description Date of Photo Holdings County/District
Full Record: x-6274/6274

Beth Dillingham mending blue and white vase in Division of the Orient, Museum of Anthropology.

35mm slide: 1909

Washtenaw

Full Record: x-6275/6275

Vernon Helmen examining Moccasin Bluff pottery in the Division of the Great Lakes, Museum of Anthropology.

35mm slide: 1910

Washtenaw

Full Record: x-6276/6276

Left to right: Vernon Helmen, Lillian Hanjian, and Robert Ackerman in the Division of the Great Lakes, Museum of Anthropology.

35mm slide: 1911

Washtenaw

Full Record: x-6277/6277

Carbon 14 analysis - archaeological specimen presented to Gloria Thornton, chemist, by James B. Griffin. Specimen may be in the form of wood, bone, shell, etc.

35mm slide: 1912

Washtenaw

Full Record: x-6278/6278

Carbon 14 analysis - the sample is then pulverized and heated in a vycor tube in the presence of oxygen over hot cupric oxide, to oxidize it to carbon dioxide and water.

35mm slide: 1913

Washtenaw

Full Record: x-6279/6279

Carbon 14 analysis - part of the chemical apparatus used in this project includes oxidation tubes, trays to catch the carbon dioxide and water, and carbon dioxide storage bulbs.

35mm slide: 1914

Washtenaw

Full Record: x-6280/6280

Carbon 14 analysis - the carbon dioxide, after purification, is passed through an iron tube containing magnesium and is thereby reduced to carbon. This carbon is separated from the magnesium oxides, which were also formed in the iron tube, by means of acid washings, and is then dried to be stored until needed.

35mm slide: 1915

Washtenaw

Full Record: x-6281/6281

Carbon 14 analysis - the powdered carbon thus produced when mixed with benzene and a small amount of oil can be smeared on the inner surface of a cylinder. The cylinder is spinning while the carbon mixture is poured in. A hair dryer is used to dry the carbon layer. A cylinder, thus prepared, is ready for admittance to the geiger counter.

35mm slide: 1916

Washtenaw

Full Record: x-6282/6282

Carbon 14 analysis - the carbon is easily removed from the cylinder with a small spatula and may be saved for a check run at a later date. Gloria Thornton

35mm slide: 1917

Washtenaw

Full Record: x-6283/6283

Carbon 14 analysis - the stainless steel cylinders containing the carbon to be counted are put into the counter.

35mm slide: 1918

Washtenaw

Full Record: x-6284/6284

Carbon 14 analysis - a close-up of the three cylinders, showing part of the mechanism used for changing automatically their positions inside the counter during operation. One of the cylinders contains the sample whose age is to be measure. The other two contain, respectively, carbon from rice (contemporary) and carbon from coal (ancient), which serve as calibration standards. Only one cylinder may be counted at a given time - namely, the one which

35mm slide: 1919

Washtenaw

Full Record: x-6286/6286

Carbon 14 analysis - one ton of iron (painted green) and two tons of lead partially shield the counter form cosmic radiation. The counter, which is about six feet long and is inside the shielding, is not visible. So-called "anti-coincidence counters" surround the carbon counter inside the shielding and serve to cancel out most of the cosmic rays which get through the shielding.

35mm slide: 1921

Washtenaw

Full Record: x-6287/6287

Carbon 14 analysis - a view of the clocks and registers which record the data. At the end of a run, the total amount of time spent on each of the three cylinders and the total number of counts from the carbon inside the cylinder appear on its particular clock and register.

35mm slide: 1922

Washtenaw

Full Record: x-6288/6288

Carbon 14 analysis - the "scaling circuit" shown is used to monitor the performance of the carbon counter. It records every count from the counter, whether it is due to cosmic radiation, contamination within the laboratory, or the carbon inside the cylinder being coated at the time.

35mm slide: 1923

Washtenaw

Full Record: x-6289/6289

Carbon 14 analysis - a view of the oscilloscope which may be connected to any point in the electronic circuits to provide a visual indication of the counting rate, the shape of the voltage pulse produced by a count, or the general performance of the circuits.

35mm slide: 1924

Washtenaw

Full Record: x-6290/6290

Carbon 14 analysis - a view of the oscilloscope which may be connected to any point in the electronic circuits to provide a visual indication of the counting rate, the shape of the voltage pulse produced by a count, or the general performance of the circuits.

35mm slide: 1925

Washtenaw

Full Record: x-6291/6291

Knowing the half-life of carbon 14, the age of the sample which was counted may be determined from the data on the clocks and registers.

35mm slide: 1926

Washtenaw

Full Record: x-11582/11582

University of Michigan - map of campus

May 1955

35mm slide: 5875

Washtenaw

Full Record: x-11583/11583

University of Michigan - Museums Building.

May 1955

35mm slide: 5876

Washtenaw

Full Record: x-11584/11584

University of Michigan - F. W. Kelsey Museum of Archaeology.

May 1955

35mm slide: 5877

Washtenaw

Full Record: x-11585/11585

University of Michigan - Alumni Memorial Hall.

May 1955

35mm slide: 5878

Washtenaw

Full Record: x-11586/11586

University of Michigan - Alumni Memorial Hall.

May 1955

35mm slide: 5879

Washtenaw

Full Record: x-12965/12965

Fluted points, Washtenaw County, Michigan. Upper Right- Ann Arbor Twp. Left- Salem Twp.

35mm slide: 7834

Washtenaw

Full Record: x-15020/15020

Three "rocks" from Washtenaw County, Michigan.

1964

35mm slide: 9503

Washtenaw

Full Record: x-16283/16283

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10817

Washtenaw

Full Record: x-16284/16284

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10818

Washtenaw

Full Record: x-16285/16285

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10819

Washtenaw

Full Record: x-16286/16286

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10820

Washtenaw

Full Record: x-16287/16287

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10821

Washtenaw

Full Record: x-16288/16288

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10822

Washtenaw

Full Record: x-16289/16289

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10823

Washtenaw

Full Record: x-16290/16290

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10824

Washtenaw

Full Record: x-16291/16291

Fluted point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10825

Washtenaw

Full Record: x-16292/16292

Fluted projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10827

Washtenaw

Full Record: x-16293/16293

Fluted projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10829

Washtenaw

Full Record: x-16294/16294

Fluted point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10830

Washtenaw

Full Record: x-16295/16295

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10831

Washtenaw

Full Record: x-16296/16296

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10832

Washtenaw

Full Record: x-16297/16297

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10833

Washtenaw

Full Record: x-16298/16298

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10834

Washtenaw

Full Record: x-16299/16299

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10835

Washtenaw

Full Record: x-16300/16300

Projectile point, Four Mile Lake, Washtenaw County, Michigan. Lindemann Collection.

1965

35mm slide: 10836

Washtenaw

Full Record: x-17290/17290

Washtenaw County, Michigan. Argillite points.

May 1967

35mm slide: 11471

Washtenaw

Full Record: x-17565/17565

Mastodon diorama on second floor of UM Exhibit Museum.

1968

35mm slide: 11752

Washtenaw

Full Record: x-17566/17566

Mastodon and beaver diorama on second floor of UM Exhibit Museum.

35mm slide: 11753

Washtenaw

Full Record: x-18074/18074

Washtenaw County, Michigan, Scio Church Road, Kuhl Mastodon site; in situ tusk, view from the north. UMMA 12/1969.

Dec. 1969

35mm slide: 12723

Washtenaw

Full Record: x-18075/18075

Washtenaw County, Michigan, Scio Church Road, Kuhl Mastodon site; in situ remains, looking south. UMMA 12/1969.

Dec. 1969

35mm slide: 12724

Washtenaw

Full Record: x-18076/18076

Washtenaw County, Michigan, Scio Church Road, Kuhl Mastodon site; in situ on right, productive backfill on left, looking Northwest. UMMA 12/1969.

Dec. 1969

35mm slide: 12725

Washtenaw

Full Record: x-18077/18077

Washtenaw County, Michigan, Scio Church Road, Kuhl Mastodon site; excavation, in situ tusk. UMMA 12/1969.

Dec. 1969

35mm slide: 12726

Washtenaw

Full Record: x-18078/18078

Washtenaw County, Michigan, Scio Church Road, Kuhl Mastodon site; excavation, in situ tusk. Bruce Smith (left) and Akersten in hood. UMMA 12/1969.

Dec. 1969

35mm slide: 12727

Washtenaw