Thus dis'soluble or dissolv'able does not mean able to dissolve, but capable of being dissolved; and divisible or dividable does not mean able to divide, but capable of being divided.
"The Grammar of English Grammars"
Goold Brown
Rawley states that Sir Nicholas Bacon had collected a considerable sum of money which he had separated with intention to have made a competent purchase of land for the livelihood of his youngest son, but the purchase being unaccomplished at his death, Francis received only a fifth portion of the money dividable, by which means he lived in some straits and necessities in his younger years.
"The Mystery of Francis Bacon"
William T. Smedley