I haven't posted on the Yoga Sutras in a while...what I imagined as a spring project has rolled into summer...
I was a bit stumped for anything I could say about sutras 1.41-1.51, the last sutras of book one. These 10 sutras describe the transition from the experience of meditation to the experience of samadhi.
I think the experiences described in the 10 sutras fall into the "practice and all is coming" category. When I have such an experience, I'll be sure to let you know. In the mean time, I'll keep working on concentration practice (dharana) as well as the rest of the "lower limbs"...but do read sutras 1.41-1.51 for yourself.
What's possible with practice and time is extraordinary.