3(5 



Mr. Badcock thought he might say that these two excursions illustrated 

 the necessity for looking in unlikely places, for they were very apt to be- 

 come accustomed to look only in what they considered to be likely places, 

 forgetting that others were very often those where something very rare 

 might be found. At Keston many were disappointed at not finding 

 any Batrachospermum at the well as usual, but others who went to 

 another pond found large masses of it in fine condition. In the bog he 

 found Surirella bifrons, and on looking at it under the microscope he dis- 

 covered that which had been a subject of some dispute, namely, the filmy 

 pseudopodia, very clearly defined. The same remark would equally apply 

 to their last excursion to the Botanic Gardens, where in the Victoria Regia 

 house, on the rootlets of one of the water plants, Epitstylus and Philodina 

 were found in greater abundance than he had ever seen them before. 



Mr. Ingpen described a new form of Camera Lucida, by Dr. Schroeder. 

 At first sight it might not appear to be neAv, but there was a very special 

 and interesting difference between this and any other. Dr. Schroeder 

 admitted that he made out the principle of it whilst working out Mr. 

 Wenham's prism for high powers. By means of a drawing upon the board 

 he (Mr. Ingpen) showed that the usual displacement was got rid of, owing 

 to the image having two reflections, and that the whole of the field was 

 taken in, the light being moderately bright from the object, and the image 

 of the pencil being beautifully clear. Until he had tested the results Mr. 

 Wenham had been equally sceptical with others as to the value of any 

 Camera Lucida with superimposed images. 



Mr. Michael called attention to an unrecorded species of the genus 

 3/yobia, which he found some time since amongst some specimens which 

 were sent to him by the Rev. C. R. M. Burrows, of Brentwood. It was 

 amongst a number of others taken parasitic upon the ordinary small Bat, 

 found in a cavern in Gloucestershire. A diagram of the specimen was 

 drawn upon the board, and its distinctive features, particularly the pecu- 

 liarity of the foot, were pointed out. It was proposed to call it 

 Chiropteralis. 



Mr. E. T. Newton (occupying the chair in the absence of the President) 

 proposed a vote of thanks to Mr. Michael, which was unanimously carried. 



Mr. E. M. Nelson read a letter from Professor Hamilton Smith, with 

 regard to diatoms mounted in his new high refractive media. Professor 

 Smith had sent over three more slides — those formerly sent having gone 

 bad — and one of these, a specimen of Amphipleura pellucida, was ex- 

 hibited under a ^in. with student's microscope. 



Mr. Nelson also drew attention to a prize of £100, recently offered by the 

 Linnean Society of Sydney, for the best paper on the Bacilli of typhoid 

 fever. 



The thanks of the meeting were voted to Mr. Nelson for his communica- 

 tion. 



Announcements of meetings, &c, for the ensuing month were then made, 

 and the proceedings terminated with the usual conversazione^ and the 

 following objects were exhibited : — 



