diff --git a/README.md b/README.md
index 4dfcede..76eef3b 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,22 @@
            you can skip to the [Updates](#updates) section at the end
            of this document
 
+** A Note About Dilution Notation**: There is some inconsistency in
+                                     how dilution is represented
+                                     across manufacturers
+                                     documentation and the relevant
+                                     literature.
+
+                                     I've tried to stick to common use
+                                     where it makes sense.  For
+                                     example, Kodak typically used
+                                     "1:2" to mean "One part of the
+                                     developer added to two parts
+                                     water."  Ilford likes to use
+                                     "1+2" to mean the same thing.
+                                     I've used both freely and
+                                     interchangeably here.
+
 
 ## Precis
 
@@ -742,17 +758,18 @@
 and the Sodium Sulfite acts as a preservative and produces the
 required alkalinity for the developer to work properly.
 
-In normal dilutions, the Metol "chews away" at the grain. That's the
-"solvent" effect.  This helps keep the grain under control, but it
-does so at the expense of absolute sharpness.
+In normal dilutions, the high contentration of ~~Metol~~ Sodium
+Sulfite "chews away" at the grain. That's the "solvent" effect.  This
+helps keep the grain under control, but it does so at the expense of
+absolute sharpness.
 
 By diluting beyond the recommended amount, we reduce the amount of
-Metol in the working developer so there is less of that solvent effect
-and the negative is rendered more sharply.
+Sodium Sulfite in the working developer so there is less of that
+solvent effect and the negative is rendered more sharply.
 
 Up to dilutions of about 1:4, I got consistently good results from
-semistand with D-23.  Beyond that, though, the reduction in the
-amount of Sodium Sulfite in solution reduces its alkalinity to the
+semistand with D-23.  Beyond that, though, the reduction in the amount
+of Sodium Sulfite in solution also reduces developer alkalinity to the
 point that the developer stops working well.
 
 Someone on the UK Large Format forum suggested that I try D-23 at a