Journal of Applied Microscopy. 441 



Journal of Tuk microscope has been the ser- 



vant of science ahiiost from the time it 

 Applied Microscopy. emerged from the hand of the inventor, 

 — =^=^^=^^=^^=^===^^== but it is not long that its value as a 



L. B. ELLIOTT, EDITOR. practical instrument in industrial insti- 



Issued Monthly from the Publication Department tutions haS been reCOgnized. In fact 



of the Bausch^&^Lom^ Optical Co., j^- jg to-day employed to Only a limited 



extent even in those industries in which 

 it should be universally used. 



Rochester, N. Y. 



SUBSCRIPTIONS: 

 One Dollar per Year. To Foreign Countries, $1.25 



per Year, in Advance. To a bacteriologist it WOUld seem 



The majority of our subscribers dislike to have their incredible that, in the great canning 



files broken in case they fail to remit at tlie expiration ^ i i ■ i ^ ^.i i ^ , i 



of their paid subscription. We therefore assume that no establishments thrOUghOUt the COUntry, 



interruption in the series is desired, unless notice to , r, , r , i i r •, 



discontinue is sent. ton after ton ot Vegetables, fruits, meats, 



and soups should be daily sealed up 

 and stored away without a single culture or microscopical examination being 

 made to test the efficiency of the sterilizing apparatus or the bacterial cleanliness 

 of the process. As a matter of fact things go right as a rule, but when a hardy 

 organism ^/oes persist in growing inside the sealed-up cans, it often costs thous- 

 ands of dollars and weeks of lime to discover and rectify what might have been 

 certainly and easily avoided by the systematic employment of the ordinary 

 bacterial methods. A botanist can hardly imagine how the starch merchant can 

 adulterate wheat starch with a liberal quantity of corn starch, offer it for sale as 

 pure, and expect to escape detection, when a moment's use of the microscope will 

 show the presence of the adulterant as unmistakably as the touch distinguishes 

 the presence of thorns among leaves, and yet thousands of steam laundries are 

 using " Special " and " Pure Wheat " starches which contain a large proportion 

 of corn starch, at or near the price of wheat starch, when they might be had at their 

 true value were their constituents known to the purchaser. The micro-structure 

 of steel and other metallic substances often tells more of their adaptability for a 

 particular purpose than can be learned by physical tests, and tells it quicker, 

 still there are few users of metals who know anything of the methods or apparatus 

 required. The microscope is a valuable aid in the examination of textile sub- 

 stances and the fabrics made from them, of many minerals, earths, and chemicals 

 used for pottery and building materials, and of paper, to determine structure 

 and quality, of handwriting, to determine its genuineness and age, of drugs, 

 food stuffs, abrasives, and powders, to determine their purity. In most of these 

 instances more elaborate and less effective tests, if any, are used. What a boon 

 to the industries a few of the facts so well known to scientific men would be 

 were they converted from the abstract to the concrete. The biologist can not 

 apply his knowledge to industries of whose needs he knows nothing, and the 

 manufacturer, not being a biologist, knows nothing of the possibilities of science. 

 When the demand for teachers has been satisfied our graduates in science will 

 find golden fields awaiting them in the industrial application of the facts and 

 laws of biology, in the making of manufacturing processes less complex and 

 more certain, thus increasing the producing power of each worker and decreas- 

 ing the cost of the article produced. 



