Using the high bass clef

The high bass clef looks exactly the same as the standard bass clef, but the music has to be played one octave up (compared with the treble clef). So it's equivalent to a "bass^8" clef where the octavation eight above the clef is removed.
It's used from the 18th century until approx. end of 20th century for french horn parts.
This usage of the F clef was inherited to the basset horn and the bass clarinet, too.
There also exists an alternate transposing instruction which instead of declaring the high bass clef tells you, you have to alter the instrument transposition every time you use the bass clef or when you switch back to using the treble clef - but this method makes transposing of a part much more complex than the usage of the high bass clef.