Yo!

Been in Japan a while, but it was two very neccessary questions that finally caused me to raise my head to the area of public noticeboards. I am hoping that as a Japanese living in Tokyo, you could answer these critical issues. Here we go!
No 1. I am one of the foreigners who has taken a liking to natto. I would like to know if there is a danger of salmonella (food poisoning) from eating tamago-natto, i.e. one bowl of rice, one raw egg and one portion of natto. I say this since in school we were told never to eat raw eggs or even raw cake-mix since there would be the danger of salmonella.
No 2. Why is it that there are absolutely no subway lines that run underneath the Imperial Palace. I can't see why there would be great underground obstructions, for example sewer pipes or service entrances, that would prevent a subway, and looking at a network map, it sure would be convenient. So why has no-one built a subway under the palace?

Yours Sincerely
Andy Ballard