Madrepores, which one must guard against confusing with precious coral, clothe their tissue in a limestone crust, and their variations in structure have led my famous mentor Professor Milne-Edwards to classify them into five divisions.
Las madréporas, que no hay que confundir con los corales, tienen un tejido revestido de una costra calcárea, cuyas modificaciones estructurales han inducido a mi ilustre maestro, Milne Edwards, a clasificarlas en cinco secciones.