The D harmonic is derived from dividing the open bottom E string into 7 parts.
It occurs halfway between frets 2 and 3 but a little bit more towards fret 3.
Its use is limited by the fact that its pitch is noticeably flat compared to the D harmonic found at fret 5 on the 4th ( D ) string - (the same note D5)
This D harmonic also appears just below fret 6 , just below fret 10 and halfway between frets 14 and 15.
The F# harmonic is found right over the 2nd fret and derives from dividing the string into 9 parts.
This harmonic can also be found at fret 14.
Go on to the next lesson for more on Natural Harmonics