(Copenhagen, 1799). 4to. Without wrappers. In ""Nye Samling af det Kongelige Danske Videnskabers Selskabs Skrifter 5"". Minor soiling to outer margin. Pp. 607-614 + folded plate.
First description of the Hammer Coral Euphyllia fimbriata. Other names this coral is known for, though inaccurately, are Anchor Coral and Frogspawn Coral.
Copenhagen, 1781. 4to. Without wrappers. In ""Nye Samling af det Kongelige Danske Videnskabers Selskabs Skrifter 1"". A few leaves detached. Pp. 240-248 + plate.
First appearance of the first description of Madrepora Cochlea (Coral).
(Copenhagen, 1781). 4to. Without wrappers. In ""Nye Samling af det Kongelige Danske Videnskabers Selskabs Skrifter 1"". A few leaves detached. Pp. 240-248 + plate. Pp. 365-373" Pp. 373-38.