Clearly within view is an enclosed type arc light which became quite prevalent and popular around 1900 owing to its improved efficiency compared to the former enclosed-type arc lights. The latter were the first to electrically illuminate streets in the United States.

Added note: On the top crossarm near the center-right you will see a small white object. This is a fuse cutout disconnect for the transformer that is mounted below. These disconnects were made of porcelain and most of them were brown. Some of the earlier ones were white glazed, like this one. A porcelain insert with a round knob-like handle was inserted into the bottom of these devices. A piece of fuse wire was mounted upon the fuseholder's pull-out "blade". The cutout's housing had the provision for two wire entiries. A lot of these had a grooved knob-like top for optional wire attachment.