Home
Random
Log in
Settings
Donate
About Wikisource
Disclaimers
Search
Page
:
Incandescent electric lighting- A practical description of the Edison system.djvu/61
Previous page
Next page
Page
Discussion
Image
Index
Language
Watch
Edit
This page has been
proofread
, but needs to be
validated
.
50
boxes are made in halves, the upper half
Fig
. 17.
being provided with holes which are