When she explored the old government mansion at Arrakeen, the Lady Jessica discovered a wet-planet conservatory concealed beyond an airlock, with a palm lock on the oval outer door This room, about ten meters square, was not part of the building's original construction but had been added to the roof as a bridal present from Tsimpo, one of the early governors of Arrakis, K> his fourth wife, Hawtma, who came from the water planet Humidis Filter glass was used to convert the harshrwhjte sun of Arrakis into a softer yellow light source Every available space in the room was crowded with exotic wet-climate plants, mostly dwarf varieties kept in pots or severely pruned The plants included mimosa, a flowering quince, dwarf cypresses and cedars, a sondagi, the fern tulip of Tupah, a green-blossomed plemscenu. grown for its rich fragrance, a green-and-white-stnped Akarso from Sikun, false orchids, a golden kowhai, flowering fogwood from Ecaz, giant mosses and broad-leaved aspidistras Abo\e all there were fabu lous roses of several varieties, pink, white, blue, variegated In the center of the room was a small tow fountain with fluted lips Water was distributed among the fern trees and thirsty rubber plants by a simple clock-set servok with pipe and hose arms A more elaborate robotic mulcher and dresser, the design of which was well outside die Butlenan limits, performed automatic gardening routines, it was programmed to remain concealed with in die wall when humans were present Lady Jessica's predecessor as chatelaine, Margot, Lady Fennng, left a warning mes sage to her Bene Gcsserit sister in this private room Jessica found a note which cryptt cally directed her to a hidden message on the under surface of a fan leaf overhanging the table The warning was found too late to prevent the hunter seeker attack on Paul, but the fountain was useful in shorting out the deadly sliver's motor The function of the wet-p