1894 THE MICROSCOPE. 51 



imagination what Red Snow looks like in Nature. But 

 to know what it really is, consult an article in the Micro- 

 scopical Journal for March, 1894, page 70 by Dr. A. M. 

 Edwards of Newark, N. J., or you will find something in 



Carpenter and in the Encyclopgedias. Until the micro- 

 scope revealed its true vegetable character and its mode 

 of growth, the red snow was one of the omens of evil and 

 gave rise to many superstitions. 



Guano Examined Microscopicaly. 



By ARTHUR M. EDWARDS, M. D., 



NEWAEK, N. J. 



To the younger microscopists of today the idea of ex- 

 amining by means of the microscope, the substance guano 

 seems rather strange but it must be remembered that a 

 true microscopist turns his searching wonder tube on 

 everything. He searches the earth below him and finds 

 wonders. He turns the tube to the waters and he sees 

 them teeming with life. So he looks at the things that 

 are common and finds in them worlds of amazement and 

 delight. To the older microscopist a slide labelled 

 "Gruano d'Ichaboe " brings back the pleasure of the pre- 

 parations of Bourgogne — he is gone now and sons, per- 

 haps grandsons, occupy his place. But what is guano 

 and what does the microscope tell us about it ? And re- 

 member that the microscope, either simple or compound, 

 is only a magnifying eye, an instrument making the eye, 



