26 



Meeting held in Room No. 80, Municipal Buildings, July 8th, 

 1889. F. W. Branson, F.I.C., F.C.S., in the chair. 



Exhibits : — 



A number of the specimens collected at Pateley Bi-idge and Brimham 

 Rocks were exliibited, including fossils from what is known as the 

 " Shell Bed," and a number of plants, among which were Bog Asphodel, 

 Setucio aquaticus, &c. 



Mr. W. Storey exliibited and presented a Swift to the Club's local 

 collection. 



The Rev. James Horn exhibited and presented to the local collection a 

 Pipi.strelle ( Vesperugo pipistrellus), taken at Harewood. 



Messrs. J. Phillips and W. Leggett showed Plnmatella repens in various 

 stages of development ; the latter also exhibited an interesting Diatom 

 (JVavicnla). 



Meeting held at the Medical School, Park Street, July 15th, 1889. 

 Professor De Burgh Birch, M.D., CM., F.R.S.E., President, in the chair. 



DEMONSTRATION OF THE STRUCTURE OF THE HUMAN EYE. 

 PROFESSOR BIRCH. 



The President, by means of drawings, pointed out the several parts, 

 their functions, ai-rangemeuts, and relations one with the other, in 

 ])roduciug normal sight, and also some of the causes of abnormal sight. 

 The description . and demonstrations with reference to the focal action 

 of the eye through the alteration of tlie lenses was most clear and 

 interesting. The presence of what is known as a blind spot in the 

 human eye, as well as in other animals, was most conclusively proved by 

 means of a simple experiment. The spot is situated at the hinder part 

 of the eye, and with the exercise of a little care and patieiice its exact size 

 can be actually drawn by the person himself. After the lecture several 

 skilful dissections were made upon the Eyes of Sheep, when the 

 structures and ai-raugement previously described were demonstrated. 



MARINE DREDGING EXCURSION. 



A " Marine Dredging Expedition "' took ]>lace on Saturday, July 20th, 

 1889. The party was essentially a working one, with the President of 

 the Club, Professor De Burgh Birch, M.D., C.M., F.R.S.E., as leader. 

 Through the courtesy of Major Woodall, of Scarborough, vice-chaii'man of 

 the Harbour Commissioners, their steam tug Alexandra, in charge' of 

 Mr. John Stephenson, secretary to the Board, with two experienced 



