Solax, The brisket is the area on a deers chest right between the front two legs. There is alot of muscle and fat on the outside of the ribcage here. If you look at it close you can see that the long hairs grow torwards each other and froms a ridge of hair. I circled it on this pic for you. The hairs on the front of the chest are usually brown as seen here but become white as you move under the deer.

P.S. from the sounds of it I can't say it is a "non-lethal" shot because nobody knows what exactly a deer will or won't die from. However, from my experience it sounds like you hit the deer high in the leg but not through the chest cavity which would sever a main vein or artery which would in turn give you bright red blood with no bubbles. (the same type of blood as if you cut yourself pretty bad). I can't tell you if this would kill a deer or not. Some will bleed to death in a few days and some will heal and get on with life. I think the effort you put in is excellent and should be commended but this deer may very well be alive as we sit hear typing. I wish you the best of luck either way.