'2U) rilK A.MKKU'AN MONTH I. V |Au^-., 



DETECTION OF CRIME. 



One night, un as8:u?sin killed a drover in Ohio, and seeuird ;i 

 paekane eontaininu SlSlH"). In ^ettin^' away he hurt his hand 

 ami stained the paekaL'e wilii l)loo(l, aft<>r which he threw away 

 the wrapper. Suspieion having rested upon a certain man who 

 was found to he spending money freely, the police followed hinj 

 and examined every hank note that he parted with, until one 

 was found eontainitig a smear of hlodd. Examined under a 

 magnifying glass, the streaks of hlood on tiie wrapper were 

 If.und to correspond exactly with those upon the l)ank note. 

 It was then j)roven that the wrapper had heen in })ossession of 

 the murdered man. Upon this evidence the i)risoner was con- 

 victed and hanged. 



IHE MICKOSCOl^H. 



Contents for August, 1S93. 



Kxtmct I nun tin.' I'rt'.-^ident'.s .\d(ln>ss lielbre the Manchester M icrascop- 



iral . "society, by J. F. Goode 11:5 



iH-monstratinfi Cyclosis, by K. N. lieynolds, M. D lli; 



The Primary Food Supply is Microscopic, b}' I'rof. W. K. Brooks 117 



List of Microscopical Societies, by Chas W. SiuiUy. (Illustrated) 119 



To Open a Kusty Knife. (Illu.strated) 122 



KniToRiAL. — Meetings of the American Society of Microscopists 123 



(^lESTloxs AxswEEKl). — Nos. l(>4-lf>7, by Dr. S. C;. Shanks 124 



164. Hoyer's Picro-Carmine 124 



Kio. Where to buy Aniline Dyes 124 



IGfi. Numerical ApjKirture 124 



167. To Tell the Thickness of Cover-Glas-ses 125 



I'K.vcTHAl. SfociKSTloNs. — liy L. A. Will.son 125 



How to Produce Prettj' Crystals of I'orax 125 



A Metho<l of .Mounting Perithecia of Ery.siphe 126 



Flower Crystals of Sugar 126 



Demodex Foliculorum 126 



CoKKEsi'(»Ni>EX(K. — Diatoms, by I'.. II. (1 127 



Pe« K.NT Prni.icATio.vs. — Intrwluction to the Study of the Diatomcejc 



bv F. W.Mills 217 



SUBSCRIPTION PRICES. 



The Microscopical Journal S2.00 ' t^ , „ ., •« ca 



The Microscope $1.00 PnceforBoth J2.50 



