Alchemist question about mummification and another side question

[Cryov]

I know I've been pestering yall with some rule clarifications lately but my friends and I just switched over to Pathfinder recently.
In any case here is my question.

Mummification states "The alchemist’s type does not change, but he becomes immune to cold, nonlethal damage, paralysis, and sleep."

Does a mummified alchemist sleep? I know by being immune to sleep he refers to the spell but I just want to be sure upon this.

I ask this because normally it would state something along the lines of "Immune: magic sleep effects" not just "Sleep"

Also as a side question, is there not a level adjustment anymore for certain races as pc's? I was looking over drow and some others and can't seem to find a level adjustment anywhere.

[Cheapy]

There's no level adjustment anymore. It's on a "work it out with the GM" basis now.

(Hint: don't allow Drow Noble).

And yes, they sleep.

[AvalonXQ]

The basic rule now is LA = CR, but then it drops to half CR as you gain more levels.

[zainale]

The alchemist’s type does not change, but he becomes immune to cold, nonlethal damage, paralysis, and sleep.

if he is immune to sleep and not just the spell what would top him from acting normal and sleeping anyways. those would be the nights that he does not have to watch over the guy needing medical attention or him slaving over a boiling alchemist lab to pop out them much needed potions/alchemical items.i already know the frustration of having to sleep when i would rather be making some extra alchemical items to bolster my weak supply of bombs. as a living dead guy sleep would be a luxury you can enjoy when you have the time for it. and taking Mummification and the three Mummification discovery's might be a possible of discovering eternal youth