Yesterday, I was working on reupholstering a chair and I had the television on for company. I wandered on to Ovation TV and a program about this painting “Every Picture Tells a Story: Le Dejeuner Sur L'Herbe.” Art critic Waldemar Januszczak told the story behind this very important painting—a great deal of which I didn’t know.
He described this painting as being one of a few works of art that singly changed the direction of art. Excuse me if I don’t remember the wording exactly and I can’t find the video clip so we will have to rely on my paint-fume affected memory. Anyway, Januszczak indicated that this work caused the stir that directly motivated the Impressionist movement and subsequently modern art, so that is how he supported his contention. Ok.
The painting is one that I have always been curious about since I took a good deal of “art in the dark” in college. But the story he tells is so much more interesting.
The typical art class description follows the lines that I found on Wikipeadia
“In 1863, Manet shocked the French public by exhibiting his Déjeuner sur l'Herbe ("Luncheon on the Grass"). It is not a realist painting in the social or political sense of Daumier, but it is a statement in favor of the artist's individual freedom. The shock value of a nude woman casually lunching with two fully dressed men, which was an affront to the propriety of the time, was accentuated by the familiarity of the figures.

Despite the mundane subject, Manet deliberately chose a large canvas size, normally reserved for grander subjects. The style of the painting breaks with the academic traditions of the time. He did not try to hide the brush strokes: indeed, the painting looks unfinished in some parts of the scene. The nude is a far cry from the smooth, flawless figures of Cabanel or Ingres.” (http://en.wikipedia.org/wiki/The_Luncheon_on_the_Grass)
The same site included a quote from Emile Zola, a great French author of the time:
“The Luncheon on the Grass is the greatest work of Édouard Manet, one in which he realizes the dream of all painters: to place figures of natural grandeur in a landscape. There are some leaves, some tree trunks, and, in the background, a river in which a chemise-wearing woman bathes; in the foreground, two young men are seated across from a second woman who has just exited the water and who dries her naked skin in the open air. This nude woman has scandalized the public, who see only her in the canvas. My God! What indecency: a woman without the slightest covering between two clothed men! That has never been seen. And this belief is a gross error, for in the Louvre there are more than fifty paintings in which are found mixes of persons clothed and nude. But no one goes to the Louvre to be scandalized. The crowd has kept itself moreover from judging The Luncheon on the Grass like a veritable work of art should be judged; they see in it only some people who are having a picnic, finishing bathing, and they believed that the artist had placed an obscene intent in the disposition of the subject, while the artist had simply sought to obtain vibrant oppositions and a straightforward audience.”
“The Luncheon on the Grass is the greatest work of Édouard Manet, one in which he realizes the dream of all painters: to place figures of natural grandeur in a landscape. There are some leaves, some tree trunks, and, in the background, a river in which a chemise-wearing woman bathes; in the foreground, two young men are seated across from a second woman who has just exited the water and who dries her naked skin in the open air. This nude woman has scandalized the public, who see only her in the canvas. My God! What indecency: a woman without the slightest covering between two clothed men! That has never been seen. And this belief is a gross error, for in the Louvre there are more than fifty paintings in which are found mixes of persons clothed and nude. But no one goes to the Louvre to be scandalized. The crowd has kept itself moreover from judging The Luncheon on the Grass like a veritable work of art should be judged; they see in it only some people who are having a picnic, finishing bathing, and they believed that the artist had placed an obscene intent in the disposition of the subject, while the artist had simply sought to obtain vibrant oppositions and a straightforward audience.”
Supportive, but far from what Januszczak describes. I found it interesting to learn the story he relates. There are several references to Masters works in the composition including: Marcantonio Raimondi's engraving The Judgement of Paris (c. 1515) after a drawing by Raphael; The Pastoral Concert, 1508, by Giorgione ;or possibly Titian (in the Louvre); and Giorgione's The Tempest. Januszczak said that these were not so much inspirations as jibes at the old masters, in keeping with the general tone of the work.

Many of the elements of the painting were attacks on society of the time. He also pointed out a frog, which was a nickname for a prostitute, and a bird, which was meant as an attack on organized religion.
I know that I am not doing his description justice, but I enjoyed the story and learning more about the meaning of this confusing composition.