Alicroscopical Societies. 249 



A very interesting object was the blackberr)- leaf with fungus 

 spores. 



There were quite a number of histological preparations exhibited 

 which, taken as a whole, were of the verj- best order. Only a few were 

 of the well-known German type of work, which shows no structural 

 detail. Among those which were especially good, Dr. C. Seller's 

 double stained preparations must be mentioned first. This gentleman 

 exhibited a transverse section of a foetal larynx under a 5-inch Zent- 

 mayer lens ; a section of foetal trachea, showing the mucous glands ; 

 a lip of a foetus, in which the epithelial cells were shown with re- 

 markable distinctness, and a section of skin from the sole of the foot, 

 which, in color, was perhaps the most brilliant specimen. He also showed 

 some large sections of the adult human larynx through the vocal cords, 

 measuring 30X34 mm. (about \% inch square) ; a section of the kidney 

 of a cat, and a section of the foot and leg of a 5 month foetus, measur- 

 ing 47 mm. (nearly 2 inches) in length. These sections were remark- 

 able for their size, thinness and evenness, and were samples of the 

 work done by Dr. Seller's mechanical microtome, which he also ex- 

 hibited. 



Mr. Zentmayer exhibited a very pretty specimen of the papillae of 



the cat's tongue ; Mr. Walmsley, an exquisite injection of the small 



intestine of the rat, and a specimen of Trichina spiralis, afso injected. 



Messrs. Queen cS: Co. had, among their exhibits, a section of bone 



which ranks among the best that we ever saw. 



Dr. Charles TurnbuU exhibited eye preparations, among which a sil- 

 ver staining of the cornea, and a gold preparation of the rods and cones 

 of the retina must be mentioned as being exceptionally fine. 



The circulation of the blood in the living animal was shown by vari- 

 ous gentlemen, both in the web of the frog's foot and in the tail of the 

 salamander, and these exhibits attracted considerable attention. 



As no exhibition can be considered complete without the frog, we 

 feel bound to remind our readers that the barbarous cruelty some- 

 times shown in arranging this animal is quite unnecessary, and deserves 

 severe condemnation. 



We have not a full list of the stands and objects exhibited by Mr. 

 Joseph Zentmayer, but among them were several deserving special 

 notice. The " Centennial " stand was prominent, and, as now made, 

 embodies several improvements over the original form. The work- 

 manship upon this stand is certainly the most perfect we have ever 

 seen. The sub-stage is in two parts, the upper part having an ar- 

 rangement for centering that is much superior in design and appear- 

 ance to the old plan. The lower part, which is independent of the 

 other, does not possess centering screws, and can be entirely removed. 

 The " Histological " stand made into a binocular was shown, and 

 the makers claim that it is the cheapest binocular made; but as R. 



