Any comments on this? I had not heard of it until looking up Lancelot Hogben, editor of a book I have. http://www.rickharrison.com/language/interglossa.html

Any comments on this?

I'd heard of it before, but then I own and have read a few books on artificial languages (aka conlangs). My faves are still Volapük and tlhIngan Hol.

It sounded like a medical term to me, so I looked it up on Google, linked with medicine. Interestingly, I found this 456 page book on "Recommendations and Guidelines for Perinatal Medicine." On page two, at the bottom, it says, "Linguistic revision:
Interglossa, J. M. Dachs and X. Carbonell"

If it's about artificial languages, how is it used there?

It sounded like a medical term to me, so I looked it up on Google, linked with medicine.

Well, here's my Google results (link). The first page of ghits refers only to the auxiliary artificial language. I looked it up on Wikipedia, and this is what I got (link). Could you provide a link to your Google results?

Based on the words shown in the first link it looks as if he'd just simplified Latin, not English.

Here's my link, z: Link As you can see in that link, I had put the terms interglossa/medicine into Google.

Based on the words shown in the first link it looks as if he'd just simplified Latin, not English.

Not all artificial languages are based on English. Interglossa was one of many based on Latin without all the endings: kind of a new Romance language.

As you can see in that link, I had put the terms interglossa/medicine into Google.

Now I see , you googled specifically on both the terms. I thought you'd just googled Interglossa. Looking at some of the resulting pages, I see that the inventor of the auxiliary Interglossa, Lancelot Hogben who was a professor of zoology, wrote a book, Genetic Principles in Medicine. That's why you're getting a bunch of these hits. As far as I can tell, Interglossa refers to the language and is not a medical term in any of these results.

Yes, I saw that too. The reason it sounded medical to me was because of the "Glossa" part. "Glossa" in medicine would pertain to the tongue, with such words as "glossitis" or "glossopharyneal nerve," which is the ninth cranial nerve.

The Greek word glossa (I can't do Greek characters on this machine) means "tongue", in both the senses used today: as the floppy thing in our mouths, and a synonym for "language".

Have you consulted any native speakers?

and it seems to me that no one can speak Klingon properly

The hazards of not using native speakers, but yes, unlike the movies, Marc Okrand did not usually coach the actors in their Klingon dialog.