Vr 
THE AMERICAN 
MONTHLY 
MICROSCOPICAL JOURNAL. 
Entered at the post-office as second-class matter, 
VOL. XXIl. JUNE, 1901, SONOMA: 
ean 324 
CONTENTS. 
Comparison of Samples of White Arsenic, harlow. With 6 
ES 151-156 
Sketch of Thomas Henry Huxley. . Book review... 156-158 
British vs. Continental Microscopes. Cross 159-161 
Instantaneous Photomicrography. Scales... eee 175-177 
NotEs By Cross.—Staining Living Bacilli; Substage Con- 
densers; Illumination with Lamps; Photo-micrography 
with Arc Lamps; Staining Flagella; Fine Adjustments ; 
Reichert’s ; Leitz’s Workshop, at Wetzler; Quekett Club ; 
Ringing Slides 161-172 
Notes By lL. H. PAMMEL.—Cyperacee ; Haustoria of Ery- 
siphz ; Centrosomes; Bacterial Diseases of Plants... 173-175 
MICROSCOPICAL MANIPULATION.—Bleaching Bone; Coloring 
NOIRE EA nos sas cncns «scant basac coenep nope nner cence 177-178 
BACTERIOLOGY.--Widal’s Reaction in Typhoid; Denver Col- 
lege ; Preservation of Eggs ; Trichinzin Pork ....... ....... aa 178-180 
International Association of RRL oes a suabdee onb 180 
Comparison of Samples of White Arsenic. 
EDWARD BARTOW. 
With Frontispiece. 
In a recent case of suspected poisoning in this state, a 
bottle of malted milk was brought to me for examination. 
I found evidence of the presence of arsenic by the Marsh 
test, and by the Reinsch test ; and even the simple test of 
heating the substance with a piece of charcoal, ina glass 
tube closed at one end, gave a heavy arsenic mirror. 
Considering the greasy nature of the material under ex-: 
amination, I conceived the idea of separating the crystals 
of white arsenic, if the arsenic should be present in that 
form, by means of ether. On panning the malted milk 
with ether in a shallow porcelain dish, I was enabled to 
