Indeed it does, or at least the google result allows download of the 1685 Latin text. I can't understand why I did not get that reference except that I was googling "John" and not "Johannis". I only got references to a 1971 translation of "A treatise of algebra, both historical and practical".
Your second reference is useless to me as it requires a subscription. English Books on Line not only makes no provision for independent scholars, it is actively hostile.
But now I am confused. David Eugene Smith in his Source Book mentions a 1673 edition. Sigmond Probst informs me that was a manuscript, which was published only in 1685. This is presumably the pdf I have just downloaded from google. But Smith excerpts from "THE English version" and refers to "his English translation". Whose? Wallis'? Is this the 1971 publication? The page Smith references matches the page of the latin text.
Thanks again to those who responded.
Regards, Bob Robert Eldon Taylor philologos at mindspring dot com