Subject: What kind of turtle might this be and how long is the incubation of eggs?

A friend found a turtle, approx 14 inches long, crossing the road and 
brought it to my small 800 gallon pond for my kids to see.  One morning i 
noticed many holes in my perrenial flower bed around the pond. The 
following morning, the turtle was in the highest, sunniest spot, covered 
with mosquitoes and sun blaring in her face. She seemed to be struggling, 
i thought she was dying. So, i tried to help her out of the hole and she 
made a hissing/snapping sound. I quickly let go and backed off. I called 
for my husband and kids, and said it was time to relocate the poor thing.. 
AAfter a happy release into a very large pond, we returned home. The kids 
investigated the holes and screamed with delight at finding one full of 
eggs (15-20)about 1 inch across, smooth and round. We gently burried them 
and put a small cage over the hole. We are in Carlisle MA. and see turtles 
frequently crossing the roads, but never this big. The mothers back was 
covered with moss, she had a sort of pointy nose, with eyes close behind. 
A long tail and very long claws. I cant remember any other distinguishing 
marks. Can you guess what kind of turtle this is and how long the 
incubation period is? Thanks for your help.

Re: What kind of turtle might this be and how long is the incubation of eggs?