This publication was brought back to my attention recently, so I thought I'd express my opinion on it, starting with the first 25 "proofs".
1- I've flown, and this does not accurately describe my observations.
2- What experiments? Did they account for environmental variables?
3- Surveyors methods are such that curvature does not need to be accounted for in railways and canals.
4- A misconception. The Nile may only fall a foot in 1000 miles, but that is relative to
sea level, not to a straight line.
5- Anecdotal. Is it the actual light being seen directly, or the beam it casts? I've seen the beam from lighthouses without seeing the lighthouse itself.
6- Failure to recognise a spherical phenomenon: gaining altitude allows one to see greater distances. This is actually evidence
for a round earth.
7- There is not enough information in this anecdote to draw a conclusion from.
8- No, a model globe would be useless for navigation, as it would not be detailed enough, or convenient to use.
9- Navigational charts are not to scale at their edges, because the earth is not flat. If it were, flat charts would be to scale everywhere on the chart.
10- Nonsense. This shows a total lack of understanding of magnetic field lines and compasses.
11- See 10.
12- Again, a lack of understanding of the spherical world.
13- More misunderstandings.
14- More anecdotes and misunderstandings.
15- Ever heard of this thing called 'gravity'? It's what keeps us on the planet.
16- Found by what navigators? I never heard of anyone going twice as far at 45 degrees South as they did at 45 degrees North.
17- Theological proof? That's shaky! I could just as easily say that our Creator made the earth round with gravity to hold us on it's surface so that we would never fall off any edges.
18- Senses are not much use without reason, and reason tells us, ultimately, that we live on a globe.
19- This could do with being worded more clearly.
20- 'Up' is away from earth, and 'down' is toward it. Simple.
21- See 15.
22- Contradicting a more reputable source. Never say 'it can't be done' to the man doing it.
23- Not sure what the author is getting at here, but proof of a globular earth is all around us.
24- See 16.
25- More misconceptions, and no evidence or references to back them up.
Sorry if that's a bit of tough reading, you'll need to reference the publication itself to get those comments in context. I'm sure there'll be some discussion on this one!