Something like this is surely not in a straight 3/2? The syncopation you get in the even-numbered bars suggests a longer-than-one-bar metric cycle like the one Tootler described, or in this case more like the metric cycles of Arab music.

X:2
T:Old Age and Young
S:Dow MS, fiddle part, 1745
N:written as 6/4 in MS
N:first note in bar 2 of third section is missing in MS, my guess
N:third note in bar 3 of third section is missing in MS, my guess
M:3/2
L:1/4
Q:1/2=100 % my guess
K:GDor
G2 B>c d(c/B/)|A FF c A(G/F/) |G2 B>c d(c/B/)|A G2 g A(G/F/) :|
ga gG A2    |F f2 F A/B/c/A/|g>a gG A2    |G g2 G A/B/c/A/:|
G>A GG, B,2    |G, D2 B AG/F/   |G>A GG, B,2    |D g2 B AG/F/   :|

Something specific must have happened in the dance at those syncopations, like a hop in the air.