Below is the only known reference to the Law of Concretion in the writings of Alice A. Bailey (AAB) and Djwhal Khul (DK). Links on these pages of the Laws of Alice A. Bailey are to the online books at the Lucis Trust website.
For a discussion of what AAB means by a “law” please see Alice A. Bailey – What is a Law?
I seek to deal with a very important point here, emphasising the close connection between Agni, the sumtotal of the life force of the logoic threefold personality, as He is seen at work on the mental plane (which closely concerns man), and that manifesting driving force or intelligent will which emanates from the cosmic mental plane. There is a very interesting series of correspondences to be worked out here and we might briefly indicate the lines to be followed in this connection by the ensuing tabulation:
The 5th cosmic plane The cosmic mental.
The 5th systemic plane The mental plane.
The 5th subplane of the The gaseous.
The 5th principle Manas.
The 5th Law Fixation, the
Law of Concretion.
The 5th Ray Concrete knowledge.
The 5th round The round of manasic
The 5th root-race The Aryan.
The 5th sub-race The Teutonic and Anglo-Saxon.
The 5th group of Devas Fire Devas of the mental plane.
The 5th Manvantara Three-fifths of the
The 5th scheme The Lord of concrete science.
The 5th Mahamanvantara The solar Logos achieves
(or solar system) His fifth major Initiation.
The 5th chain Principal evolution—fire devas.
The 5th Hierarchy The greater Builders.
Vibrations of fifth order Manasic.
You are welcome to post your comments and understanding of this law.