96 
ME. H. N. MOSELEY OJST THE 
Saks 
On the Polyps of Allopora oculina. Forh. Selsk. Chr. 1872, 
p. 115. 
Prof. A. Schneider and 
On the Structure of Actiniae and Corals. Sitzungsbericht der 
M. Rotteken. 
oberhessischen Gesellschaft fur Natur- und Heilkunde. 
1 March, 1871. 
Kolliker .... 
Anatomisch-systematische Beschreibung der Alcyonarien. 
Abh. der sensk. naturf. Gesell. Frankfurt, 1870. To 
this work I was able to make a short reference at Yeddo 
through the kindness of Dr. Hilgendorf. 
Kolliker .... 
On the frequent occurrence of Vegetable Parasites in the hard 
tissues of Animals. Quart. Journal of Microscopical 
Science, 1860, vol. viii. p. 171. 
Dr. Carpenter . . . 
On the Structure of the Shells of Molluscous and Conchiferous 
Animals. Trans. Microscopical Society, 1844, ser. 1, vol. i. 
p. 123. 
Methods. — The corals and the Sarcophyton examined were hardened in absolute 
alcohol, being placed in it in the living condition. Portions of them were subsequently 
decalcified in weak hydrochloric acid, imbedded in wax in the usual manner, and 
sections were then prepared from them. The sections were examined partly in 
glycerine, partly in Canada balsam, after being rendered transparent by means of 
oil of cloves. Some sections were stained with carmine. Some portions of Heliopora 
were placed whilst living in a solution of chromic acid, and slowly decalcified 
whilst in the solution by the addition of a few drops of hydrochloric acid from time 
to time ; these yielded some results which were not obtainable from specimens 
hardened in alcohol and more rapidly decalcified. Further sections of small area 
were forcibly cut from the undecalcified hardened corals in order to show the relations 
of the hard parts to the soft, and separate polyps were removed from their calicles with 
the point of a scalpel and examined whole in glycerine. Portions of the tissues of 
Ileliopora were also observed in the fresh condition. 
For examination of the structure of the hard calcareous tissues, fine sections were 
prepared by grinding in the usual manner. 
Account of the structure of Heliopora cserulea. 
Ileliopora ccerulea was found growing in abundance on the reefs fringing the shore 
of the small island of St. Cruz Major, which lies opposite the harbour of Zamboangan, 
Mindanao, Philippine Islands. The coral grew in about two feet of water at low tide. 
It has a uniform light chocolate-colour when fresh and living. Although I trans- 
ferred portions of the living coral to a glass vessel under water so that they never came 
in contact with the air, I did not succeed in getting the polyps to expand ; and I have 
