I ran across another unusual deed today. The scribner included calculations pertaining to the survey acreage. This makes for an interesting read. If you guys recall, a parcel of land measuring 10 chains by 10 chains is 10 acres. There is a rhyme and reason for using the Gunter's Chain for measuring land and the subsequent calculation of parcel acreage. One (square) section of land measuring 80 chains by 80 chains equals 6,400 square chains, and dividing by 10 equals the number of acres, or 640 acres. Remember that one chain by one chain = 66 feet by 66 feet = 4,356 square feet, or one tenth of an acre. This is where the 10 and one-tenth figures come from when using chains as a unit of measure when calculating acreage.
I interpret the word "cause" to be "course."
Other thoughts?
This description was perhaps written by a non-surveyor who was looking at a survey drawing. That might explain the substitution of "cause" for "course."
It might also explain an incomplete bearing call - "...thence 46 degrees East.."
The description calls for adding triangles of land outside two of the courses. The word "plus" evidently means the triangles are to be added rather than subtracted.
In one case the position of the triangle is called out - "...beginning after 1.47 chains..." The position of the other triangle on the course is not indicated.
The base and height of the two triangles are given, and the area calculations confirm them. That certainly shows good intentions on the part of the writer, and an earnest desire to be understood.
But the positions of the triangle apexes with respect to the bases are not given. A person who had a clear recollection of 9th-grade plane geometry might have realized there are an infinite number of triangles with a given base and height. This individual didn't. As a result the outside lines of the triangles are undefined.
All in all, this description is a real collectible. Thanks for posting. I'm glad I don't have to run it on the ground.