Petri dish in a dream: what does it mean?
A shallow covered dish where something is given everything it needs and then watched, which is the whole method in one object.
How do the four traditions read it?
Each reading below comes from a named tradition and a cited source, so you can see where it came from and decide what fits your dream. The four often disagree, and that is the point: a symbol rarely means one fixed thing, and the distance between Freud, Jung, modern research and myth tells you more than any single verdict could.
How did Freud read this symbol?
Freud would attend to the deliberate encouragement. Something is helped to grow in order to be examined, and he would ask what the dreamer cultivated in order to look at it.
After Freud, The Interpretation of Dreams (Brill trans., 1913), public domain.How did Jung read this symbol?
A Jungian reading might note the contamination. The commonest result is something nobody put there, so the dish records the room as much as the experiment.
Our summary of a Jungian reading, in our own words, not Jung's. See Jung, ed., Man and His Symbols (1964).What does modern dream research say?
Growth and unwanted arrivals appear in dream reports, and content analysis records unexpected events among ordinary dream content.
Our summary of the content-analysis findings. See Hall and Van de Castle, The Content Analysis of Dreams (1966).What do myth and folklore say?
Penicillin was found in a contaminated plate that should have been thrown away, so the most famous accident in medicine happened in one of these.
Rosmerta Publishing editorial synthesis (after Frazer; Brewer).How can writers use this symbol?
The same symbol, read as craft material rather than as a dream. What it does on the page, how genres use it differently, and what happens when you turn it inside out. Written for novelists, screenwriters and poets who need the symbol to actually work, and it ends with something to try.
Where does this appear in literature?
The commonest thing in one is something nobody put there, which is how the most famous accident in medicine happened.
Rosmerta Publishing editorial synthesis. Our own words; no quoted text.What does it do in a story?
Everything something needs, provided so it can be watched.
What are the genre conventions?
A round lid, and a circle of jelly.
How to subvert it
Write the dish that stays clean.
Try this
Two hundred words about a container that records the room.
Only the first of these names a source. What a symbol does in a story, how genres treat it, how to invert it and what to try are our editorial judgement as writers and editors, not findings from a body of research. They are offered as craft opinion and should be argued with.
The books behind these readings
These are the books this entry actually draws on, not a general reading list. Where a text is in the public domain we link the free copy first, because you should not have to pay for something you can read for nothing. Every edition listed has been checked to exist and to be the right one.
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The Interpretation of Dreams
The source behind every Freud reading in the dictionary. This is the 1913 Brill translation we adapt from, and it is free to read online.
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Man and His Symbols
The accessible Jung, and the honest place to start for the archetype material our Jung readings summarise.
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The Golden Bough
Cross-cultural context for the myth readings. Public domain and free to read online.
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