wood nymphs and sylphs

[Plenum]

I previously hadn't given much credence to the idea of wood spirits and sylphs (air spirits), but there are a couple of passages where the word 'elemental' is mentioned:

77.6: ... There is no necessity for negative thought-forms regardless of pain distortions. The elimination of such creates the lack of possibility for negative elementals and other negative entities to use these thought-forms to create the worsening of the mind complex deviation from the normal distortions of cheerfulness/anxiety.

96.2 ... There was a most unusual variation in this configuration of attitude when this instrument beheld the dwelling which is to be inhabited by this group. The instrument perceived those elementals and beings of astral character of which we have spoken.

I was wondering if it'd be a leap to go from elemental --> nature spirit?