ther is a ball of white jelly in my pond could you tell me what it is

Can you describe in it more detail? I have a key that may help identify some pond eggs (if they're eggs) at http://www.fishpondinfo.com/egg.htm

The fact that the "jelly" is white could indicate that they are eggs that have rotted, or they may not be eggs at all. If you can send a photo, that will help.