414 proceedings: biological society 



The President announced that the sixth lecture of the Washington 

 Academy of Sciences on science in relation to the war would be given 

 by Dr. Raymond Pearl, on "Biology and War," Thursday, May 9, 1918. 



Under the heading of brief notes and exhibition of specimens Dr. 

 Paul Bartsch called attention to the destruction by fire of one of the 

 handsomest rhododendron thickets in the District flora and to the 

 breeding of starlings in a deserted woodpecker's hole in one of the trees 

 of the Howard University grounds, the hole having been lately occupied 

 by a redheaded woodpecker. He also called attention to the habit of 

 a terrestrial spider in covering the opening of its burrow with a leaf 

 during rains. 



Mr. Alex. Wetmore exhibited a fragment of a Puffinus bone ob- 

 tained from Calvert Cliffs, Chesapeake Beach, Maryland. 



The regular program was as follows: 



Martha Brewer Lyon; Fauna of the human eye. Dr. Lyon had 

 made a careful examination of the literature as indexed in the Surgeon 

 General's Library and the Index Medicus which reveals the following 

 animals occuring in the human eye and its adnexa, the figures' after the 

 names indicating the frequency of their occurrence: Treponema pallidum 

 infinite; Taenia solium, between 300 and 400; Taenia echinococcus, 

 75 to 100; Opisthorchis felineus, 1; Paragonimus ringeri, 1; Agamodistoma 

 ophthalm.obiu7n, 1; Monostomulum lentis, 1; Drancunculus medinensis, 3; 

 Loa loa, 30 to 50; Agamofilaria oculi, 3; Filaria equina, 2; Filaria con- 

 junctiva, 3 ; Thelazia callipaeda, 2 ; Trichinella spiralis, 2 ; Lepeophtheirus, 

 pectoralis, 1 ; Demodex folliculorum, 8; Ixodes ricinus, 1 ; Pediculus capitis, 

 no cases reported though seen by many ophthalmologists; Phthirius 

 pubis, 30 to 50; among the diptera, all larval form, many unidentified, 

 those identified or at least named, Hypoderma bovis, 2; Oestrus ovinus, 2; 

 Gastrophilus haemorrhoidalis, 2; Musca domestica, 2; Wohlfartia magni- 

 fica, 2; Lucillia macellaria, 1; CalUphora vomitoria, 1; Sarcophagasp., 1; 

 beetle larvae, Necrobia sp., 1. The fly larvae are mainly represented by 

 forms which deposit living larvae. 



Dr. Lyon touched on the early history, geographic distribution, lo- 

 cation in the eye, means of diagnosis, description of parasite, symptoms, 

 and in some cases the probable outcome with treatment. Some 

 interesting observations were brought out as the prevalence of cysti- 

 cercus cellulosae in Germany before the inspection of pork by the state 

 and its practical elimination since; the many reported cases of pubic 

 lice on the eyelashes of children against very few reported for head lice; 

 the possibilities of the future study of the cause of chalazia by Demodex 

 folliculorum. "the paper was illustrated by lantern slides. It was 

 discussed by Drs. L. 0. Howard and Paul Bartsch, and by the chair. 



Maynard M. Metcalf: Opalina and the origin of the Ciliata. This 

 will appear in a future number of the Journal. 



M. W. Lyon, Jr., Recording Secretary. 



