I. Separate the given number into periods of three figures each,
placing a point over units, then over every third figure towards the
left in whole numbers, and over every third. figure towards the
right in decimals.
II. Find the greatest cube in the first period on the left hand ;
place its root on the right of the number for the first figure of tjie
root, and also in Col. I. on the left of the number. Then multi-
plying this figure into itself, set the product for tlie first term in
Col. IT. ; and lutdtiplying this term by tlie same. figure again, sub-
tract this product from the period, and to the remainder bringdown
the next period for a dividends ^

III. Adding the figure placed in the root to tlie first term in
Col. I., multiply the sum by tlie same figure, add tlie product to tlie
first term ir) Col. IT., and to this sum annex two ciphers, for a di-
visor ; also-add tlie figure of the root to the second term of Col. I.
IV. Find how many times the divisor is contained in tie divi-
dend, and place the result in the root, and also on tlie right of the
third term of Col. I. Next multiply tlie third term thus increased by
the figure last placed in tlie root, and add the product to tlie divisor ;
then multiply this sum by the same figure, and subtract tlie product
from, tlie dividerid. To the remainder bring down tlie next period
for a nem dividend.
V. Find a new divisor in the sam,e manner tliai the last divisor
was found, then divide, djc, as before ; thus continue the opemxtion
till the root of all the periods is found.
