266 



Journal of Applied Microscopy. 



is on the inside of the box, 

 as shown in the section. Of 

 the size shown in the hgure, 

 one can easily put eight of 

 the infiltrating dishes in a 

 drawer of the large Lillie 

 oven. 



S. H. Gage. 



Histological Laboratory, Cornell 

 University, Jan. 13, 1899. 



A Convenient Washing Apparatus. 



The apparatus described below will be found convenient for washing material 

 after being killed in an acid or other solution. It consists of a glass tube of 

 suitable thickness, ten centimeters long and from two to three centimeters in 

 diameter ; two open brass rings with thumbscrews ; a funnel of brass or tin about 

 five centimeters wide at the top, four centimeters deep, and ending below in an 

 open tube one centimeter long; and two cotton or linen cloths for strainers. 

 The apparatus is put together as shown in the figure, and may be supported 



on a tripod. 



When the objects are ready to be 



washed, remove the lower ring and cloth 

 and pour the objects, with the solution 

 in which they are contained, into the 

 tube, and then replace the ring and 

 cloth, and let the water flow into the 

 funnel. Usually it will be found best to 

 let the lower part dip into a glass dish, 

 as shown in the figure. When the 

 objects are washed they can easily be 

 transferred to a bottle by taking off the 

 cloth into which they will have settled. 

 In this way small and delicate objects 

 can be handled without injury. 

 "-"•"■k.t^-C -^i^'"' " "" This apparatus can also be used as 



a filter, or for collecting small water 

 plants and animals. For instance, by having a cloth with a coarser mesh above 

 and a finer one below, organisms of a certain size can be collected in the lower 

 cloth free from foreign matter or larger animals and plants. 



John H. Schaffner. 

 Botanical Laboratory, Ohio Stale University. 



fH^- 



