. Bulletin. Science. r. '"'-*t4i!iLii> Figure 67.—Unassembled parts of the hand telephones worked out at Brown University. At the top is the first form; at the bottom, the second. {USNAf jo6oi3, 3o6oig; Smithsonian bhotos 433og, 453og-B.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution P

---

. Bulletin. Science. r. '"'-*t4i!iLii> Figure 67.—Unassembled parts of the hand telephones worked out at Brown University. At the top is the first form; at the bottom, the second. {USNAf jo6oi3, 3o6oig; Smithsonian bhotos 433og, 453og-B.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off

---

Size: 1539px × 1624px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience