Your missing the jiggle pin tony. It's not a breather it's to drain any oil that gets past the crank seal

So sir mur tell me pls, what is that tiny hole for then???  Dod you mean that the pressure will pass thru the  breather instead thru that hole?   Mine has that tiny hole underneath but no canister  on top.I ask this because i also want to learn.

Rob, it is very simple. You have no knowledge or experience that are relevant to these matters. 

Im not quite sure why there is even a need to have a breather canister on the transmission case when there is already a little hole underneath as seen in the picture.

The Feb. issue of MiniWorld just arrived today and it has an article on various breather set ups over the history of the Mini. Randy

The boss cast into clutch housing I believe was for the AA block coming along. The clutch housing is not a good one to convert to a breather type. Later ones have a better baffle to avoid oil climbing. The A+ 998 engines use a closed breather housing and just the one on the forward tappet cover. What you have should be right and fine. Steve (CTR)

Steve,
The head has the extra bolts front and rear.
I do have a boss on the clutch housing. Indeed it has no vent hole or threaded holes. 
Jim

That's good news for you. If you have a bolt between the valve cover and thermostat housing bingo. The one tube from the tappet cover to PCV valve standing on manifold would be correct. If four synchro MK2 there may be a boss cast into the clutch housing but never drilled or tapped. If so it is possible to put one there but it would not be correct. Steve (CTR)

I have the Parnell book on order.

 

Post pictures of your engine... I'm sure those more knowlegeable will be happy to point out what's appropriate and what's not for your car.

Get a copy of John Parnell's "Original Mini Cooper And Cooper S. It has the most complete documentation of the Cooper and Cooper 'S' cars available.

Kelley

It turns out your memory is very good. A few minutes with a flashlight reveals that my fromnt vent is indeed on the front tappet cover!

When I got the car the engine was in pieces, so it is very possible I do not have the correct configuration for my make/model. So far, searching the 'net has not yielded any helpful information. I wonder if one of the Mini books would cover this subject?
Thanks!

I can't give specifics about which vents are correct for which year, but can describe a few of the variations.
The 68 850 I once owned had a tube coming out of the top of the valve cover, connected to the air cleaner housing.... no pcv valve at all. The 69 998 had something similar.
If I recall correctly early Cooper S 1275's had a breather on the tappet cover on the side of the engine facing the firewall.
My current Mini has a 1275 MG Metro 1275 that has breathers on both the timing chain cover and the transmission housing.
You mention you have a 67 Mini with a 1275 cc engine having a front breather and a pcv valve. I don't think that set-up is original to a 1967 car. (I could be wrong.)

My 1967 MKll 1275 has a breather on the timing chain cover to the PCV valve on the intake manifold. I have also seen Mini's with a breather on the transmission housing. Which is correct for which years?
Thanks!