674 NOTES AND EXHIBITS. 



to be a member of the atropine group. Its properties closely 

 resembled those of hyoscine, from which it differed in certain 

 fundamental points, notably in the crystalline form of its auro- 

 chloride, in giving no colour with phenolphthalein, and in yield- 

 ing atropic instead of tropic acid on hydrolysis. It possesses the 

 property of powerfully dilating the pupil of the eye. He pro- 

 posed to name the new alkaloid Solandrine, from its source. A 

 sample of it was exhibited. 



Dr. Chapman exhibited a graphic record of the blood pressure 

 of a dog which had received an intravenous injection of 8 - 2 mg. 

 solandrine separated by Dr. Petrie from Solandra Icevis. Pre- 

 viously the dog, which weighed 20'6 kilos, had been given 103 mg. 

 pilocarpine nitrate which had produced inhibition of the heart's 

 action with subsequent slow rhythm (27 beats per minute), and 

 secretion of saliva and tears. After the injection of solandrine 

 the rate of the heart beat was increased (in the second minute 

 after injection 100 beats), so that the blood pressure rose rapidly. 

 Stimulation of the peripheral end of the vagus no longer caused 

 any alteration in the heart beat. Respiration became more 

 rapid. Secretion of the saliva and tears ceased. Dilatation of 

 the pupils of the eyes was also evident. 



Mr. G. A. Waterhouse exhibited a pupa and perfect insects of 

 Troides priamus poseidon [Lepidoptera : Rhopalocera.] The 

 pupa? were found at Cape York and sent to Sydney, being received 

 during the first week in September. The first imago (Q) emerged 

 on the 31st October, the second (£) on 1st November, and the 

 third ((J) on 6th November. Two pupse were still alive. 



Mr. H. S. Mort showed specimens of a freshwater mollusc, 

 Vivipara stelomphora Bgt. var. malleata Rve., from Ibusuki, Sat- 

 suma, Japan. This species inhabits the warm water near the 

 hot springs, and is called " Tabina " by the Japanese. 



Mr. Baker showed herbarium and timber specimens, preserved 

 fungi, and various vegetable products in illustration of his paper. 

 Also a branch of Eucalyptus Bridgesiana having normal and 

 abnormal leaves and fruits on the same twigs. 



