23-03-2022, 07:02 AM
(22-03-2022, 06:47 PM)Olive Wrote: Bluebags!  I remember them for bee stings.  I wonder what was in them, something alkaline, perhaps baking soda.  Am I right to think that washing soda was a thing?  What was it?Baking soda, sodium bicarbonate NaHCO3; washing soda, sodium carbonate Na2CO3. Blue bag was ferric ferrocyanide- Prussian Blue dye.
I do have other cameras!