184 The Microscope. 



N. B. — The Editor of The Microscope edits the magazine. 

 He is not in charge of its business affairs. These are in the care 

 of Lucas & Co, Business letters should therefore not be ad- 

 dressed to the Editor personally. 



Acknowledgement. — To Mr Fr. Dienelt, Loda, 111., for several 

 mounts of insects and of their isolated organs. — To Dr J. G. 

 Meachem, Racine, Wis., for a slide of Trichina sinralis from the 

 human diaphragm. For numbers and size these surpass any of 

 the kind that I have previously seen, a field of the one inch 

 objective containing thirty large worms. Imperfectly cooked 

 sausage was the means of introducing the Trichinae into their 

 victims. 



The American Society of Microscopists will hold its fourteenth 

 annual meeting, Aug. 10, in Washington, D. C, under the presi- 

 dency of Dr F. L. James, of St. Louis. It will continue in ses- 

 sion for five days. 



WAYS • 

 AND •^AEANS 



A FEW HINTS ON THE EXAMINING OF SPUTA FOR 

 TUBERCLE BACILLI. 



DR C. F. GARDINER. 



When, in 1882, it was heard that Dr Koch had discovered the 

 micro-organism that caused consumption, it was hoped that by 

 a step further, he or some one else would give to the world a 

 method by which this micro-organism could be destroyed. 

 Although this has not as yet been accomplished, much good has 

 been done by this discovery as it has enabled physicians to 

 detect consumption at such an early stage of its course that 

 prompt measures will often stop it. This is indeed a triumph 

 of the microscope and one of which microscopists may be justly 

 proud. I have endeavored in the following to give, in as short 

 and practical a manner as possible, the whole process of the 

 microscopical examination of the sputa for the tubercle bacilli. 



