354 TIIK AMKKirAN MONTHLY [Dtn-., 



cillus which causi'S tl>e troubh' can he deteeted in the s|)Utuui. 

 Wo now know that dysentery and ehokMa ar(> dui' to micro-' 

 scopic organisms. The condition of tlie hlood is <iuickly re- 

 vealed nnder the ohjective. Whole hooks have heen written on 

 this snhject, the latest of which is Wethered's Medical Micros- 

 copy and which no i)hysician can do without unless he has 

 Benle or sonieother of the earlier treatises. 



Thirty Years Hence. — It will not surprise us if within 30 

 years the nund)erof housekeepers who use microscopes equals 

 the numl»er of doctoi-s who now use them. Housewives could 

 detect a great number of adulterations in groceries and drugs. 

 They could examine meat and so reject that which contains 

 trichina*, tuberculosis and other fatal disease germs. A multi- 

 tude of sicknesses could thus be warded ofV. In Berlin, and 

 other parts of Germany, already all animals slaughtered are in- 

 spected microscopically. In Berlin, 4-) ladies, trained for this 

 special work, are constantly employed. Blood, tissues, etc., are 

 scrutinized. There is a heavy penalty for selling uninsjjected 

 meat. 



Naval Medical School. — Among the required studies at our 

 Naval lalioratory in New York, tlie S(>cretary of tlie Navy ]nv.- 

 ecribes the following: 



Microscopy (ind Micr()})i(ihirjy : Practical acquaintance with the 

 handling of the microscope, its construction, use, care, and 

 choice ; simple lens, optical jirinciple, construction, and use ; 

 compound lens, low-power objectives, use and care ; accessory 

 apparatus, general method of work, illumination, effect of dif- 

 ferent media ; the eyes, peculiarities, use, and protection ; mount- 

 ing, dry, in liquid, and in cells; section cutting soft and hard 

 ti.ssues, crystals, rock .sections and grains; staining ; high power 

 objectives, use and care, cover connections, and immersion 

 fluids; adulteration of foods, drugs, etc., detection of fibers, 

 paper, and handwriting. * 



Microbiology. — Laboratory examination of unicellular forms of 

 life, yeasts, protococcus, amoeba, the molds, alga-, and fungi of 

 fresh waters ; fauna of potable waters. 



General Bacteriology. — Isolation, jireparation of culture media, 

 mounting and study and identification of species, bacteria of 

 potable waters, sewage bacteria, typhoid bacillus, biological ex- 



