diff --git a/demo-list.rst b/demo-list.rst
index 3b673b4..ce16279 100644
--- a/demo-list.rst
+++ b/demo-list.rst
@@ -8,6 +8,7 @@ Month 1
 1M.1.DEMO    Searching: Web Interface to search subsets of curated phenotypic/clinical data
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+* :doc:`descriptions/argon-demo5`
 * Team Carbon - description?
 
 Month 2
@@ -22,11 +23,13 @@ Month 2
 2M.2.Demo Searching: Interoperability of search across clouds
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+* :doc:`descriptions/argon-demo8`
 * Teams Helium and Argon - description?
 
 2M.3.DEMO Searching: Search metadata across catalogs and data storage endpoints
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+* :doc:`descriptions/argon-demo9`
 * Teams Argon, Xenon, and Helium - description?
 
 Month 3
@@ -63,14 +66,14 @@ DEMO: Automatically Generated Jupyter Notebook Reports for RNA-seq Data Analysis
 3M.3.FULLSTACKS: Exchange workflow among each stack
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-* maybe :doc:`descriptions/argon-demo4`
-* maybe :doc:`descriptions/argon-demo6`
+* :doc:`descriptions/argon-demo6`
 * maybe :doc:`descriptions/calcium-demo2`
 * :doc:`descriptions/xenon-demo1`
 
 3M.5.FULLSTACKS: Test user logon, access data, execute workflow
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+* :doc:`descriptions/argon-demo4`
 * maybe :doc:`descriptions/helium-demo1`
 
 Month 4
@@ -123,6 +126,7 @@ Month 5
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 * :doc:`descriptions/xenon-demo3`
+* :doc:`descriptions/argon-demo2`
 
 5M.4.FULLSTACKS: User data injection and processed in workflow
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -151,6 +155,7 @@ Month 6
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 * :doc:`descriptions/calcium-demo3`
+* :doc:`descriptions/argon-demo1`
 
 6M5.DEMO: MetaAPI: Deployed across selected APIs in consortium
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -173,12 +178,7 @@ Orphan demos
 
 Demos not attached to any milestones:
 
-:doc:`descriptions/argon-demo1`
-
-:doc:`descriptions/argon-demo2`
      
-:doc:`descriptions/argon-demo5`
-
 :doc:`descriptions/helium-demo4`
   
 :doc:`descriptions/xenon-demo4`
diff --git a/descriptions/argon-demo8.md b/descriptions/argon-demo8.md
new file mode 100644
index 0000000..c35510b
--- /dev/null
+++ b/descriptions/argon-demo8.md
@@ -0,0 +1,15 @@
+# Argon Demo 8: Interoperability of search across clouds
+
+* The user is a bioinformatician looking to search across data from data stewards stored in multiple clouds about gene expression in a particular tissue, perhaps to explore differences in gene regulation across some parameter, e.g., sex.
+
+* The user environment is a Jupyter notebook.
+
+* The user invokes the search API, with appropriate security credentials, via a lightweight python client  (transparently and reproducibly downloaded in advance from pypi as specified in the notebook’s requirements.txt file).
+
+* The user experiments with different search parameters, e.g. ‘kidney’.
+
+* The API invocation triggers a search over standard semantic search APIs including the Monarch search API, which returns a payload indicating data types available for tissue of interest, including MOD data, GO data and GTEx, from multiple clouds rendered in the notebook as a standard python dataframe.
+
+* The payload also indicates data available for finer-grained or coarser-grained queries (based on the hierarchy of the standard multi-species Uberon tissue anatomy), and based on this the user decides to generalize the search to ‘genitourinary system’.
+
+* This search profile includes gene interaction data from GTEx broken down by tissues in this system, pathway and function data for genes involved in embryonic development of this system in GO, and model organism gene expression data aggregated via Bgee, relevant phenotypes of interest (these could later be linked to dbgap variables and used for interrogating TopMed data but this is out of scope for 180 days). From here the user can import the relevant data into the notebook environment.
diff --git a/descriptions/argon-demo9.md b/descriptions/argon-demo9.md
new file mode 100644
index 0000000..3fbbf13
--- /dev/null
+++ b/descriptions/argon-demo9.md
@@ -0,0 +1,3 @@
+# Argon Demo 9: Stub
+
+Stub