Was mortal ever before privileged to watch over the growth of a black pearl? The activities of the mantle, a blending of enticing colour and poetic motion, were slow, free, and light-attracting. The ancients believed that some pearls were constituted by flashes of lightning playing on bubbles within the oyster. A relative of the family here seemed to be wooing the tropic sun of its beams, if not to vitalise, at least to burnish its treasure. Close scrutiny showed that the pearl was not absolutely free. It was enclosed in a transparent membrane, the merest film, which confined it to a particular position in the mantle, while it seemed to possess independent actions--vertical and revolutionary. Perhaps the rays of light which fell unequally on it through the water created the illusion of revolutions, but it is certain that the pearl seemed to be playing a game of hide-and-seek. Was it possible for human nature to deny itself so easily gotten and pretty a prize? I confess, though the possibility of the pearl increasing in size and loveliness was obvious, that the fact that pinnas are subject to ills, chances, and mishaps, was also recognised. Left to be slowly tossed about, the pearl would become greater; but size, though an important feature, is not the only desirable quality. And while it grew might not another barefooted beach-comber discover it? Or might not one of the many unintelligent admirers of the pinna itself find entrance by drilling or by the violent crushing of the valves, and, ignoring the treasure, destroy the organs and the substance by and from which it was being delicately elaborated? Suppose, I argued, I remove the gaping shell, I shall no longer be able to enjoy the rare, the unique pleasure of presiding over the gradual perfection of a pearl, an aesthetic advantage to which I alone had been made free. Could present possession of a little sphere of carbonate of lime, polished and sooty black, compensate for the continuance of the chaste joy of watching one of the most covert and intimate processes of Nature? Balancing the immediate material gain against the inevitable moral loss, I was almost persuaded to self-denial, when, with a sudden impulse, begot of the consciousness of rightful acquisition, the pinna was forcibly yet carefully drawn out of the sand in which it was deeply embedded and in which it was anchored by toughened byssus. Directly the valves were prised apart the pearl fell into my hand. Never before had I seen one so loosely retained within its shell. Generally, in the case of the pinna, pearls are embedded in the muscles or soft parts, and are not primarily discernible, but have to be sought for by passing the “meat” through the fingers. On this occasion all previous experience had been set at naught, so that it might seem that the prize had been presented by the animal as its perfect and most opulent work. STRANGE PEARLS.