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[D8206D], Letter from Houghton Farm, David Pearce Penhallow to Thomas Alva Edison, May 8th, 1882

Title: [D8206D], Letter from Houghton Farm, David Pearce Penhallow to Thomas Alva Edison, May 8th, 1882
Editor's Notes: Would like a instrument that can obtain and record the hourly variations in the temperature of plants and soil using electricity[TAE replies: "Write to Prof G F Barker who I think has done something in this line Small thermo batteries may be placed in the Earth property protected and wires run from them to the Laboratory attached to galvanometers"]
Author: Houghton Farm; Penhallow, David Pearce
Recipient: Edison, Thomas Alva
Mentioned: Barker, George Frederick
Date: 1882-05-08
Type: Letter
Subject: Agriculture; Electric battery
Folder ID: D8206-F
Microfilm ID: 60:489
Document ID: D8206D
URL: https://edisondigital.rutgers.edu/document/D8206D
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
License: CC0 1.0 Universal
Has Version: Archive.org Viewer, Microfilm Series Reel 60

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