[Expo-tech] peculiar file not visible problem

[Philip Sargent (Gmail)]

http://expo.survex.com/geolog.htm
appears as an empty file.
But it is definitely there on the server when I login via ssh:

ls -tlrgaA geol*
-rw-rw-r-- 1 www-data   5993 Apr 18 04:23 geolog2.htm
-rwxrwxr-x 1 www-data 403865 Apr 18 12:21 geology.jpg
-rw-rw-r-- 1 www-data   7936 May  6 22:37 geolog.htm
pwd
/home/expo/expoweb

git status says everything is clean.

What's going on ?