CHAPTER VIII -CALCULATIONS REGARDING EXCAVATIONS. 2783 An example is illustration thereoj 62. In relation to the place known) as Vidyidhyanghawr, the breadth is 8, and the length is 12. The thickness of the sur rounding wall is 5 at the bottom and 1 at the top. Its height i8 10. (What is the cubic measure of this wall ?) Thus ends (the section on) the measurement of (brick) piles in the operations relating to excavations. Hereafter. We shall expound the operations relating to the work done with saws (in sawing wood ). The definitions of terms in relation there are as follow : 68. Two hosts less by six digulars is what is called a kjs&a. {he number measuring the courses of cutting from the beginning to the end of a given (log of wood) has the name of mwg@ !or way). 64-66. Then, in relation to collections (of logs) of wood of not less than two varieties, consisting of teak logs and other such logs hereafter to be mentioned, the number of digul«8 measuring the breadth, and those measuring the length, and the number of mwgos are (all three) multiplied together. The resulting product is divided by the square of the number of digulus found in a hasla. In operations Trelating to saw-work, this gives rise to a valuation (of the work as measured) in (what is known as) poptikhs. In relation to logs (of wood) consisting of teak logs and other such logs, the number of host«8 measuring the breadth and of those measuring the length are multiplied with each other, and (then) multiplied by the number of mdingsand (thereafter) divided by the puttikds as above determined ; this gives rise to the numerical measure of the work done by means of the saw. 68 to 83Ki¢k = 1३ hasta. Mirga is the name given to any desired course or line of sa wing in a log of wood. The extent of the out surface in a log of wood measures ordinarily the work done in sa wing it provided that the wood is of a definite hardness assum pgd to be of unit valueThis extent of the cut surface is measured by means of a special unit area , which is called a poika and is 98 digulds in length and one kisk or 42 digul akin breadth. It i easy to see that a potak is thus equal to seven square husbox. 86
