 In the second column, the frequencies in the first column have been divided by 2 a few times to bring them into familiar octaves
 The third column adds up the digits of each frequency, numerologically and reveals that most of them factor to 9
 The fourth column indicates (in red) if these frequencies exactly match the harmonic frequency for that note as we determined from our magic base frequencies of 5.4 Hz and 7.2 Hz – and indicates in black if they are close matches
 The last column highlights in red where Zarlino’s frequencies match the frequency of that note if it is determined via a different harmonic approach than the one we chose

 Being as Zarlino was an intelligent fellow, we’ll keep track of these frequencies in case they are useful when it comes to the practicalities of building a Just Intonation musical instrument
To summarize the findings – of the eight notes that Zarlino lists, A, B, C, C#, D, E, F#, G:
 His frequency exactly matches the A, B, D, E frequencies we worked out from the phenomena of natural resonance.
 And we exactly match C#, F#, G if we calculate these harmonics still starting from Bflat, but using an alternative harmonic of harmonics
 The only one that’s a miss is C – probably because he perhaps wanted to take the simplistic approach that 1 x 2 = 2, 2 x 2 = 4, 4 x 2 = 8, 8 x 2 = 16, 16 x 2 = 32,
32 x 2 = 64, 64 x 2 = 128, and 128 x 2 = 256. In other words, for this one note, he seems to have determined this note mathematically – (and perhaps this is the correct frequency. We’ll keep that one in our hat, also)
I’m not going to argue with Zarlino on the correct way to determine the harmonic frequencies – what is significant here is that we came up with a bunch of musical frequencies based on a chance encounter with vibration in a Johannesburg hotel room – and those frequencies, one way or another, also match what Zarlino recorded in his book published in 1558.
How is this possible? Well, first of all, Zarlino was an early advocate in Western culture for Just Intonation. Secondly, he must have started with the same frequencies as I did in order to calculate his just, harmonic series; either that, or the frequencies were passed down to him from some earlier culture. I will have to read his book in old Italian to find out.
Just another confirmation from history that we are on the right track with these frequencies – and good to point out to the internet trolls (professional or otherwise) that arguing that something is “wrong” because it contradicts received knowledge that you’ve never bothered to question, is illogical and lazy. In other words, you can’t prove that something doesn’t exist just because you haven’t bothered to find the evidence of it. We have, and it does!