What do you mean? Power's on top, emitter's on the bottom, signal's from left to right (well, it's an oscillator, so nevermind that
)...
An excellent reminder that ground is an arbitrary definition, and it makes more sense to use different polarities with different circuits.
It's a common sight in oscilloscope schematics to see the signal path from left to right, with one phase on top, inverse phase on bottom. Which means the bottom half is all upside down, but you get used to it because it's almost always mirrored from the top side (and anything that's going between, like common mode terminations, bias, etc. tends to stand out).
Tim