HPB TRANSMITTING LETTERS TO MAHATMAS ---
HPB and other Chelas transmitted letters to Adepts by disintegrating the paper and transmitting it and reintegrating at the other end. Logic is very simple.
Today, we all transmit email, videos, photos using Internet. Recently I saw a Youtube video how the information is broken into packets and then packets are transmitted to the recipient where the packets are reassembled and delivered. This is analogous to what HPB and Chelas were doing in late 1800s. Here is an educative video on YouTube you can watch and enjoy.
https://youtu.be/0338GP5amfM?si=OtABevtgNOYXrbUT