103 



shown are projected into the object plane by a 1-inch objective 

 used as condenser, and magnified a few times by viewing with 

 another 1-inch objective and B eyepiece. 



Mr. A. E. Hilton : Head of Sand Wasp, Jliscus cainpestris, 

 showing the organs of tlie month in their natural form and 

 colour. Mounted in glycerine, without pressure. 



February 1st, 1901. 



Mr. T. A. O'Donohoe: Three Proboscides of Flies; (1) the 

 head and tongue of a House Fly with the lobes fully expanded, 

 seen from the front. (2) The tongue of a Blow Fly shown with 

 expanded lobes, but seen in profile ; and (3) the tongue of a 

 Blow Fly with its lobes closed and seen in profile. These were 

 mounted without pressure in glycerine ten years ago, and are 

 sufiiiciently transparent to show the bundles of voluntary muscles 

 by which they perform their functions. 



Mr. A. E. Hilton : Head of Thistle Bee, Sphecodes^ showing 

 the organs of the mouth in their natural form and colour. 

 Mounted in glycerine. 



iNIr. A. Earland: Foraminifera, from Coral Mud, Timor Sea, 

 N. of Australia, 50 fathoms. Many of the forms recently 

 described by Mr. Millet in the Journal E.2I.S: occur in this 

 gathering. 



Mr. H. Morland : Valves, frustule, and halved valve on edge of 

 Antkodiscus floreatus, Gr. and St. From Oamaru, New Zealand. 

 The halved valve shows the manner in which the sides of the 

 valve and top are strengthened at their junction by bracket or 

 corner-pieces. 



Mr. J. B. Scriven : Two stages in the development of the ovary 

 of the Blow Fly. (1) Pupa condition near maturity ; ovum made 

 up of imperfectly formed cells ; (2) Ovary of imago ; cells and 

 nuclei distinct. 



February 15th, 1901. 



Mr. J. T. Holder : Vertical section through the snout of Foetal 

 Kabbit showing developing jaw, nasal septum and olfactory 

 capsules, tongue, upper and lower incisors, muscle with elongated 

 nuclei, etc. 



