Possessive s: Having it both ways

[Benjamin Barrett]

I only say the extra s when it's written that way:

Written as James', I say <James>
Written as James's, I say <Jameses>

This has nothing to do with my own personal choices when I am writing or
speaking, only my pronunciation when reading something already written.

Have I missed a rule/convention somewhere along the way?

Benjamin Barrett
benjamin at btranslations.com

>-----Original Message-----

I wrote:

>>Janus (www.janus.com) is running a TV commercial where the copy is both
>>spoken and written. They say Janus's but the script says Janus'.
>
>Seems perfectly fine to me.  How else would you say it?  Cass' house
>would certainly be said kæsiz hows.
>
>Rima