on samples having high enough wet strength to measure are recorded in table vi table vi______________________________________water by weight ofwood pulp plus tensile strength tensile strengthswater with grain kg cm sup 2 against grain kg cm sup 2______________________________________0 208 1686 5 182 15016 1 136 9520 9 101 5527 3 55 5132 0 31 2837 1 14 943 0 2 5 2______________________________________ when the same fiber is treated with process oil at 22 by weight of the fiber plus oil the tensile strength with the grain is 157 kg cm 2 fiber compositions which are about 40 water mixed at 6 minutes in the br banbury at slow speed are the optimum for all of the fiber this corresponds to a work input of 0 53 kilowatt hours per kilogram with less mixing dispersion is poorer and with more mixing there is loss of physical properties however there is little difference in the dispersability of the pulp types despite substantial variations in the initial pulp sheet tensile strengths the degree of dispersion continues to improve as water is added up to about 40 of the wet fiber weight then at higher water levels dispersion and tensile properties diminish tensile properties are subject to considerable scatter due to variable bonding but are relatively insensitive to fiber dispersion it is preferred to dry the compositions either.