986 SEC. 18. BIOLOGY. 



These drawings tshow tlio reproductive process, the minute structure, and 

 every individual cell of Coprinus radiatits, one of the smallest members of the 

 mushroom tribe. The fungus, natural size, is shown growing upon fragments 

 of straw or dung on drawings Nos. 1, 2, 7, and 8. The enlarged details are 

 magnified from 25 to 3,000 diameters by the aid of the camera-lucida attached 

 to the eye-piece of the microscope. Height of the full grow r n fungus f of an 

 inch. Number of cells entering into the composition of one fungus, 25,760,000. 

 Weight of one fungus, -^ of a grain. 



3933d. Pour Glass Cases, containing a series of dissec- 

 tions of Insects of various orders. Professor Wcstwood. 



3933e. Glass Case, containing 39 microscopic slides and 

 dissections of insects. Professor Westwood. 



3840. Original Cast of the trunk of a boy, the thorax opened 

 to show the natural position of the heart after removing the lungs. 



Steger, Anatomical Institute, University of Leipzig. 



3841. Cast, with the Abdominal Cavity opened to show 

 the natural form and position of the stomach, liver, and kidneys, &c. 



Steger, Anatomical Institute ', University of Leipzig* 



3842. Several Small Original Casts. 



Steger, Anatomical Institute, University of Leipzig. 



3843. Histological Photographs. 



Steger, Anatomical Institute, University of Leipzig. 



3844. Photographs to illustrate the Changes during De- 

 velopment of the chick. 



Steger, Anatomical Institute, University of Leipzig. 



3845. 25 Photographs on Glass, for the magic lantern, 

 for instruction in physiology (anatomy, physiology, biology, and 

 development). Dr. S. Th. Stein, Frankfort on the Maine. 



These slides have been photographed from nature. 



3846. Three Large Diagrams. 



Dr. S. Th. Stein. Frankfort on the Maine. 



These contain 



1. 35 physiological photographs. (The whole taken from nature.) 



2. The application of photography to physiology and medicine. 



3. Thermophotography. 



3847. Diagrams, for botanical teaching, by L. Kny. 

 1-20. Prof. Kny, Berlin. 



These diagrams are published by Wigand, Hempel, & Co., Berlin. 



3849. Model of the Mechanism of the Accommodation 

 of the Eye* Prof. Beetz, Munich. 



This model is made by Tauber of Leipzig from a design of Dr. Beetz, and 

 is explained by a drawing and description which accompany the apparatus. 



