CUKRENT NOTICES AND MEMORANDA. 255 



joint, and partly by the hypo-pharynx, which runs below the man- 

 dibles, carrying the salivary canal ; on each side below the hypo- 

 pharynx lie the maxillse. — Am. Nat. 



Mr. Edmund Wheeler, of Tollington Road, Holloway, has 

 favoured us with a parcel of very beautifully prepared slides, com- 

 prising Geological, Botanical, Entomological, and Anatomical 

 subjects, amongst which are fine sections of Limestone Rock from 

 Norway with Diatoms in situ, and of Barbadoes Rock with Poly- 

 cistina in situ; Fossil Diatoms from Nottingham, U.S.A. ; portion 

 of a Leaf of Drosera rotimdifolia, with several captured insects, 

 some of which appear to be partially digested. The sting and 

 poison-gland of Hornet : in this slide the gland and poison-duct 

 are stained blue, whilst the chitinous barbs and sheath remain of 

 a rich brown colour. Section across the forehead and through the 

 two eyes of Eristalis tenax : this is a very beautiful slide, the 

 bacillar structure leading from the cornea to the optic ganglion 

 being most perfectly cut. Indian Mosquito from S. Mahratta. 

 Amongst the Anatomical slides are : — Double-stained Blood- 

 discs of Frog, showing the nuclei ; Cerebellum of Monkey, 

 injected and stained; Sections of Toe of White Mouse, and 

 Tongue of Cat, both injected ; and a Section of Human Small 

 Intestine, admirably prepared, showing the Villi and Goblet cells. 



We have received from Mr. H. P. Aylward, of Strangeways, 

 Manchester, a set of Apparatus for Pond-Life Hunting, which 

 appears well adapted for the purpose. The bottle-holder is a coil 

 of steel wire made to grasp the neck of the bottle, the other end 

 of the wire being a spiral hollow screw, in which the taper end of 

 any sized walking-stick may be inserted and held securely. The 

 dipping-bottle packs in a neat japanned cylindrical tin box, the 

 upper half of which is composed of very fine copper gauze. 

 When the bottle is emptied into this box, the animalculse will be 

 retained in the lower part, and the surplus water escape through 

 the gauze. This operation may be repeated any number of times, 

 and the contents afterwards returned to the bottle. For special 

 gatherings, another japanned box is suppHed, containing several 

 large test-tubes securely corked. The size of cylindrical box and 

 its case containing the bottle is 5 inches long by 2 inches in diam- 

 eter; that of the box with test-tubes, 5I inches by 3J inches by i 

 inch. They may be carried very conveniently in the coat-pockets, 

 and should always accompany the microscopist in his country 

 rambles. 



Mr. W. P. Collins, 157, Great Portland Street, has sent us 

 a forward copy of his October Catalogue of Scientific Books, 

 relating in the present instance mainly to Microscopy and the 



