202 ANNUAL, REPORT OF THE Off. Doc. 



MILK SELLING. 



Frozen milk and dried milk which will stay frozen or dried and 

 keep indefinitely will be the common forms in which milk and cream 

 will be sold some day, and each and every dairyman — or some central 

 station for them — will freeze or dry the milk. The immense amount 

 of energy and money spent in transporting dilute products will be in- 

 cidents of the past. Edison has made millions from concentrating 

 low grade iron ores. Milk will be concentrated some day. Freezing 

 and drying will be done by the use respectively of liquid air and of the 

 stored heat of the sun's rays, or, perhaps, the heat of the interior of 

 the earth. Milk thus dried will be sterile; being dried in a vacuum, 

 its albumen will not be so much coagulated as to lessen its digesti- 

 bility. 



BUTTER AND CHEESE. 



Butter will be ripened artificially and in no other way. The pro- 

 ducts of fermentation rather than the ferments themselves will be 

 used, and a sweet, cream butter, flavored as a housewife would flavor 

 a cake with an essence, of a uniform character will result. 



Cheese will not be thus flavored, since its ripening is due to other 

 causes and needs slow development. I look for a change here more 

 particularly in the greater appreciation of the dietetic value of the 

 article by the people and its larger use. 



Do these notions sound irrational and impossible? What would 

 our fathers have said of a prophet who, in 1850, had predicted that 

 at the close of the nineteenth century their children would flash New 

 Year's greetings under the ocean from Europe to America; that their 

 sous in New York would whisper soft nothings to their sweethearts 

 in San Francisco ; that they would send messages on invisible waves 

 of the air to ships far out of sight at sea and through intervening 

 mountains; that their houses would be warmed and illuminated by 

 the lightning, and that they would travel on the thunderbolt; that 

 they would harness Niagara as a horse, and that its power would do 

 mighty work afar off; that they would look through the human body 

 as through a window, and that they would open the abdomen, per- 

 form incredible surgical operations therein without pain and with- 

 out danger? ^Yould his prophecies have passed current? And yet 

 he would but have predicted such commonplaces of to-day as the 

 ocean cable, the telephone, wireless telegraphy, electrical lighting, 

 heating and power transmission, the X and kindred rays and anti- 

 septic surgery. 



Many of the prophecies for 1950 are bound to come true before that 

 date. The logic of events will compel them. Let us be ready for 

 them when they come. Our great duty today, however, seems to me 

 to be to make the best of our present knowledge and opportunities. 



