This is a structured guide to understanding and accessing the (स्वर चिन्तामणि), a seminal text on the science of Swara Yoga (the yogic study of breath and sound).
Many universities (University of Chicago, Heidelberg) have digitized their Indology holdings; you can download for research purposes. Purchase the Kaivalyadhama edition (approx $8-10) or borrow via interlibrary loan. The scanned 1929 edition on archive.org is perfectly usable for study, though missing the English translation. Swara Chintamani Pdf
Feel free to send suggestions, comments or to report mistakes/incorrect translations
Thierry (BOD1)