Besides the crustaceans, who were about man-sized and "civilized," there was another form of intelligent--or at least semi-intelligent--life on Trident. Certain large, fish-like inhabitants of the planet's seas had been contacted more than once to deliver messages to the exploring members of the outpost. This was always promptly accomplished by having one of the "fish" contact another of the same species who was in the right location. "_What_ did you say?" demanded Smith. "Telepathic? A telepathic _fish_? Oh, no! Don't ask us to--Well, what I mean is ... well, how do you know they're reliable?" More in the same vein followed. Westervelt stopped listening when he realized that Smith was being convinced, willing or not. Stranger things were on record in the immensity of the known galaxy, but Smith took the attitude that they were all a plot against Department 99. Westervelt pried the book from Beryl's grasp and turned over pages to the article on the planet Trident. He skimmed the opening, which dealt with galactic co-ordinates and the type of star at the center of the system, and did the same with the general description of the surface and what was known of the life forms there. The history since discovery was laconically brief. _Here it is_, he told himself. _A species of life resembling a Terran fish in general configuration, about twenty feet in length and suspected of having some undetermined sense whereby individuals can locate each other at great distances. Well, by the time it's in print, it's outdated._ Someone turned on a brighter light, and he realized the interstellar talk was at an end. Smith looked around. He held out his hand for the book, seeming to take for granted that someone should have found the page. "I don't see _how_ we're going to reach this one," he grunted, plopping the volume down on the table to scan the article. Colborn snatched at a small piece of apparatus he had evidently been assembling. Only Beryl was impressed; the others knew that Smith said this of every new case. "Tell Mr. Lydman and Mr. Parrish I want a conference," the department head requested. "We'll use the room next door." Beryl and Westervelt left Colborn examining his gadget suspiciously and retraced their steps up the corridor. At the door to the main office, the blonde left him, presumably to go through to the corner office occupied by Parrish, whose secretary she was. Westervelt dwelt on the thought of sending her on the way with a small pat, but forced himself to continue up the other wing of the "U." He passed two doors on his left: another conference room and a spare office used mainly for old files. Doors to his right led to washrooms. This end of the hall was not blank as on the other side; it had a door labeled "Laboratory--No Admittance." The last door to the left, corresponding to the location of the communications room, led to Lydman's office.