@Bruce
   Awesome this proves we can put enough of these in a yard to get some voltage ...   
@ Bill

I had never heard the tesla pylon description you gave odd. i thought then it came to me waht you described i have only seen one place... a video game command and conquer red alert.
Funny how movies and games always get the advanced tech before us...

@Bruce,

Bravo
Good work! (unless it is just galvanic)

Around Dec 26 (sorry I don't know the page) I made a similar experiment. And I got similar results. Because of that experiment, I think you are right about this separation. Last night I decided to review this with everyone since no one picked up on it.

Here is how I did it.
I was looking for a way to give enough electrical separation from the +- pairs of electrodes so I could end up with a series type augmentation in volts. I made some pots out of cement because cement is mostly sand which has a good conductivity. My hope was that the cement would pick up the currents in the earth and be able to pass them along, but somehow be separated from the earth itself to not "short out" as everyone is calling it.

My probes went N-S then from that S place proceded NE (chosen cuz that is a good alignment here) then from that spot turned and went S once more. I did it using Cu and Zn because of ease of hook up.
What I got that day was an increase of 0.1Vdc  and 1.2vac going through all 4 probes N to S but the S was not in line with the N as yours is. The spacing was no more than 4 feet altogether.

Your results are much higher. I think you are the first one here to be successful in doing this as series.
On the chance that you have a galvanic reaction one could put your pairs into cement pots and keep any poisonous leeching within the pot.
Bravo!

@Arctic Knight,
Thanks for the clarification on the nail. I will do it when the rain stops .

Would you be willing to make a drawing that shows that steel with flattened end with something inside ...? same reason - clarity. I think not everybody on this thread is american

I am finding this site unreachable again today. I will make a wee drawing to add to my words here as an edit if that is possible.

Now, this "short" thing. To my mind If you short a battery you do not get a reading of nothing. You get so much so fast that things get very hot and melt or explode. not zero. I may be completely wrong about this but possiblly we are seeing this earth battery incorrectly. If so a modification will be helpful. For instance would the behavior of the faraday disc be like this?

jeanna

with a faraday disk 2 positives equals positive! thats a short, in our case i BELIEVE but have not proven yet that the voltage we are getting is a result in the difference of resistances of the metals also known as galvanic reaction or decay, this difference reacts with the 2 positives of the planet and the difference in hight of the poles that we are using gives us our positive and negative at different voltages.  i think i can take my steel pipe and aluminum pipe and get a better reading using this diagram below. this is my future idea i just have to figure out how i am going to pull it off especially with the wife being fussy about my science.

please note i am not an artist by profession

let me describe in detail my photo and its professionaly painted detail (sarcasm humor)

what we have is the blue dot would be the connection inside the tube where the coil would be soldered, but now that i think of it just a small coil near the top of the pipe or tube would be fine not much wire should be needed to tap the magnetic feild assuming there is one to be had.  but the connection in any case should be made inside the wire wound inside twards the outside and perhaps glued into place, then that wire (needs to be insulated) would extend several feet to the surface (several feet should be enough to prove a point dont you think?)  simply hammering one side makes it like a stake to pierce the ground and also gives us something to hammer against for instance insert a wooden or metal rod and hammer it in i happen to have just such a piece of steel currently and will be trying this if i can get time.   now your positive rod or metal needs to be on the surface of the ground only a few inches into the ground, (we want atleast a foot between the top of the steel "spike" and the bottom of positive pole but more space preferred. this would increas our electrical difference at the poles which should also increase our current assuming the principals of the faraday planet are true the deeper we go the more negative the soil is, but the difference in potential will only be as good as the nearest Conducting portion of the pole to the surface so if part of this springs a "leak" closer to the surface we loose part of our difference.

let me know if you have any questions about my design and theory

Strange behavior today. I got popped out.
Here is that drawing of sort of series in cement pots.
jeanna

@Arctic Knight
Sorry about the wife thing. I don't have one of them. 

Thanks for the picture. It really helps.

It seems to me that if there is a loss of voltage with any leak, then perhaps it should be glued after being soldered to the steel pipe to maintain isolation.

How many turns. And how do you figure how many turns? I can look it up to study it if it is too complicated to explain. What would I look up? what key words?
I hope is it possible to think about this without calculus?

jeanna