12^ The Irish Naturalist. [May, 1898. 



INIr. PiM showed, as an opaque object, a fragment of Azolla, which in 

 the open air in his garden had assumed an unusually deep red colour. 

 Under a very low power this formed an exceedingly beautiful specimen. 



INIr. M'ArdlE exhibited Radttla Carringtoni, Jack., which he collected 

 at Tore Waterfall, Killarney, in September last ; this had been exhibited 

 at the December meeting of the Club as an unnamed species, but has 

 since been identified. He also showed photographs of the male and 

 female plants by Mr. G. Pim, F.L.vS. Specimens bearing mature 

 perianths have not previously been found. 



Mr. Henry H. Dixon showed specimens of Diffliigia thalassia in 

 conjugation. This species of Difflugia was found by Dr. Joly and the 

 exhibitor in large quantities in the surface water of Dublin and Killiney 

 Bays during last summer. It differs from previously described Difflugia 

 in its marine habitat and in the fact that the foramen, through which 

 the pseudopodia are protruded, is surrounded with a silicious collar. 

 The test is indurated with irregular silicious particles among which 

 occasionally coccoliths and fragments of sponge-spicules are found. 

 The conjugating forms exhibited resembled closel}- those figured by 

 Wallich and Leidy from a fresh -water habitat. 



Dr. M'WeEney showed a hanging - drop - culture of the Typhoid 

 Bacillus in broth, to which had been added 10 per cent, of serum from a 

 patient suffering from typhoid fever. The culture had been started 

 that morning and had been meanwhile kept at 37° C. The bacilli had 

 multiplied enormous!}', and many of them had grown into tangled 

 filaments owing to end-to-end arrangement of the individuals. This 

 behaviour was due to the unfavourable influence exercised upon them 

 by the specific serum, and was obtained with sera as yet too feeble to 

 give a positive reaction with the Gruber-Widal method as ordinarily 

 applied. It constituted, in the exhibitor's opinion, a valuable method 

 of determining the existence of typhoid fever where, either though the 

 early period of the disease or for any other reasonj the usual tests failed 

 to give definite results. 



Prof T. Johnson showed a preparation of Japanese paper recently 

 introduced for Christmas cards, &c. The paper shows on one side the 

 fibres of the Paper Mulberry {Broussonetia papyri fcrd)^ and on the other 

 side a very thin radial longitudinal section of the wood of the Royal 

 Japanese plant {Paulozunia imperialist a tree noteworthy for its fine 

 foliage. 



On the motion of Prof Johnson, seconded by Mr. Andrews, a cordial 

 vote of thanks was passed to the Council of the Royal Dublin Society 

 for permitting the Club to hold its meetings in the Council Room. / / 



Three new candidates for membership were proposed* / V 



/ 



