4^0 s.A. :.J^'X(.)M\■ci•:Tl■:^. 



time it is well to use ])lent_v of na])thalene to pre\"ent destruc- 

 tion by insects. The sporangia travel fairly well if they are first 

 wrapped in crumpled pajjer and then ])acked closely in a tin or 

 box. 



Specimens ma}- be sent liv samjile ]>t»t: and I shall be 

 ha])py to refund the cost of i:)ostaoe. 



( Read. J Illy 4, 1917). 



TR-WSACTIOXS OF SOCIETIES. 



Royal Society cf Socth .-Vfkp.a. — Wcdncsdav, April 17th: Prof. 

 J. D. F. Gir.CHkisT. M..\.. Ph. I).. D.Sc. F.L.S.. C.M.Z.S.. Pre.'^ident. in 

 the chair. — " Liiniiih'sify in a Soitffi African carthivorni. ami its oriiiiii " : 

 Prof. J. D. I'". Gilchrist Eumir.oiis earthworms are fdund on the 

 slopes of Table Monntain. Tlic luminosity proceeds from a discharge 

 from the mouth and anus, which consists of cells heaYily laden with 

 inclusions of different kinds. The smaller mclusi' ns C( insist of a 

 substance allied to fat, by the oxidation of which the light is produced. 

 The cells arise from the body cavity, and arc discharged into the anterior 

 and posterior parts of the alimentary canal by dehnite cfjmmunications 

 between the ciclum and alimentary tract. — " Xutc mi the adjitiiatc of 

 Bccoitt's ciiniiuaiil of tivo lunary qiiantics " : .Sir '!". Muir. — On the 

 qencra Dit'locyslis and Broonicia " : I. P.. Pole Evans and Miss A. ^I. 

 Bottomley. Some specimens of Diplocystis ha\e recently Iieen obtained 

 by tlie authors from Portuguese East Africa, and this is the lirst recorded 

 African occurrence of the genus. The African material is not identical 

 with that from Cuba, and the auth<irs descril)e it as Diplocystis Junodii. 

 n.sp. — "South African Perisporiacccc, II: Rciisional notes": Dr. Ethel AI. 

 Doidge. A revision, due to work on a number of fresh collections, of 

 a ])re\ious conmumication on the subject Iiy the author. — " Frcsh-ivater 

 snails as a cause of parasitic diseases " : Dr. F. G. Cawston. Tbic author 

 describes a number of snails collected by him from various districts in 

 South Africa, and found to l)e infested with the cercarial stages of trema- 

 tode worms. — "Colour and cheniical constitution. Part If: The remain- 

 ing plifhalcins" : Dr. J. Moir. The author described the absorption 

 spectra of complex phthaleins, partly duplex compounds of the phenol- 

 anthol type, and partly of a new class ie.;^.. tliymol-naphtho! ) derived 

 from thvmol-benzoic acid. 



