1893.] MICROSCOPICAL JOURNAL. 240 



which causes a disease of the feet of cattle. One who has seen 

 a mode of fungoid growth can see at a glance how ahnost impos- 

 sible it would be to eradicate the mycelium after it had gotten 

 started. In one case, however, the ingenuity of man has turned 

 fungoid plants to account. It is in the case of the chinch-bug. A 

 fungus has been discovered which if it is sown in fields infested 

 with that insect pest will attack the insect and develop rapidly 

 enough to cause the creature's death. 



Allied to these fungi, also, are those which cause the decay of 

 fruit, and even the teeth of man are able to supi)ly the proper 

 nutriment of a fungus which causes their decay. The whole 

 immense field of the bacteria lies nearby these interesting plants 

 and some citations to it are given in the partial bibliography 

 which follows. 



5.— Collateral Reading. 



De Bary. Morphology of tbe Fiiugi. Tyndall; Hoating Matter iu the Air. 



Cooke. Fnugi. luternational Scien- Steinberg. Bacteriology. 



tific Series. Stransberger. Practical Botany. 



Huxley and Martin. Practical Biol- Prudden. Dust and its Dangers. 



ogy. Klein. Micro-organisms and Dis- 

 Howes. Atlas ofBiology, plate XIX. ease. 



Ann. Kep. U. S. Dep. Agriculture, Schutzenberger. Fermentation. 



1887, p. 323. Truessart. Microbes, Moulds and 

 Ann. Rep. U. S. Dep. Agriculture, Ferments. 



1884, p. 212. In addition to the above, see also the 

 Carpenter. The Microscope, p. 562. text-books of Botany, such as Bes- 



Encyclopedia Brittannica. "Fungi," sey's Botany, Sach's, old edition 



"Schizomycetes." and other standard text- books. 



Biological Laboratory of Hamline University, 

 St. Paul, Minn., August 29th, 1893. 



Fragile objects. — Soak them in a solution of gum arable and 

 glycerine (seven parts to one part) so as to toughen them; 

 you can then handle them without breaking. 



Prices of Drugs. — The average price of drugs is 82 times as 

 much in the United States as in Denmark. What costs 75 cents 

 in New York can be bought in Copenhagen for 20 cents. In 

 Norway, Sweden, Belgium, Germany, Austria, Holland, Hun- 

 gary, Switzerland, and Portugal, the prices of drugs average less 

 than half what they average in the United States. 



