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I was going to say, it's missing a current limiting resistor, till I noticed this footnote: "I use NIMH rechargeable batteries because they are a lower voltage ie 1.2V instead of 1.6V. I do not recommend the use of alkaline batteries as you run the risk of popping the LED.".
If you want to use alkaline batteries, you will have to find a way of putting a 1/4W 47 Ohm resistor in series (in-line) with the LED and batteries.
I actually managed to fit one inside the globe body when I did this a while ago. But from memory it wasn't easy.
Strictly speaking you should have a 15 Ohm 1/4W resistor in the NIMH powered circuit, but in practice leaving it out may just shorten the (considerably long) life of the LED a little bit.
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