Circular text in the Voynich: does the writing actually form a loop?

[Voynich1234]

I have always assumed that the writing must start and end somewhere within the circle for it to make sense. Why would it keep looping seemlessly? 

Normally there is a clear mark or gap to show that the text ends, but not always. Note that the inner circle of the capricorn example below doesn't have an obvious start or end point. I do not think that the text "loops", or that the beginning and end transition into eachother.  

That's a good point, and I think the Capricorn example is particularly interesting.
I agree that the absence of a visible gap doesn't necessarily mean the text forms a continuous loop. What interests me is whether the transition between the apparent end and beginning behaves differently from the connections between the other glyph groups around the circle.
If that transition is not structurally consistent with the rest, it would suggest a circular layout with a beginning and end, rather than a genuinely closed sequence.
Have you noticed any examples where that transition seems unusually continuous?