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Photograph

"Rag Doll" Testing

Date: 1913
Description: Class of girls and teacher running a seed germination test ("rag-doll" test) in the classroom. The class is standing around a table, and are using a pail t...
Photograph

Testing Milk with Babcock Tester

Date: 1915
Description: Teachers and students using a "Babcock Tester" in a classroom. Original caption reads: "Pupils of grammar grades testing milk with Babcock Tester; County S...

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