19181 FOODS — HUMAN NUTRITION. 761 



elongata from a coccid on Muehlenbergia, at Elk Point, S. Dak.; Aneristus 

 oculatipennis, reared from the black scale, at Catacaos, Peru ; Fannicencyrtua 

 thoreauini (n. g.) from Coccus confusus, at Mesilla Park, N. Mex. ; Zaom- 

 moencyrtus submicans (n. g.) from Nyctobates penn.sylvanica, at Shireman- 

 town. Pa.; Ccraptroceroideus ciyictipes (n. g.) from Aspidiotus lulianthi on 

 Eugerion canadense, at Wellington, Kans. ; Berecyntus bnkeri gemma from 

 Euxoa larva, at Queen.sboro, Ont., and also from larva of Hadena dcvastatrix, at 

 Ottawa, Canada ; and B. bakcri arizonensis from Choraxagrotis .sp., at Phoenix, 

 Ariz. The author also records the rearing of S. flavopalliata occidcntalis from 

 CItrysomphalus aurantii citrinus at Avondale, Cal. 



The Argentine ant: Distribution and control in the United States, E. R. 

 Barbek (f7. S. Dept. Agr. Bui. .?77 {1916), pp. 23, ftg. 5).— This bulletin in- 

 cludes the results of studies carried on in continuation of tho.se by Newell and 

 Barber, previously noted (E. S. R., 29, p. 563). 



The pest has continued to spread and is now known to occur In nine southern 

 States, the many infestations covering a total area of considerably more than 

 a thousand square miles. At the time of writing it was known to occur from 

 Houston, Tex., on the west to Wilmington, N. C, on the east, and from Nash- 

 ville, Tenn., to the mouth of the Mississippi River. Among other cities known to 

 be infested are Shreveport, La., Texarkana, Ark., Memphis, Tenn., Augusta 

 and Atlanta, Ga., and Charleston, S. C. This wide di.stribution appears to have 

 taken place with commodities shipped by steamboats and railroads. 



The greater part of the bulletin deals with repression, particularly with ant 

 poisons, of which the only effective ones for permanent control are poisoned 

 sirups. Experiments have led to the recommendation of an improved formula 

 said to be superior to any yet tested on account of its stability at high tempera- 

 tures, freedom from crystallization, and continued attractiveness. This sirup, 

 proposed by W. E. Cross, is prepared as follows: Granulated sugar 15 lbs., 

 water 7 pints, tartaric acid (crystallized) i oz., boil for .SO minutes, allow to 

 cool. Dissolve sodium arsenite (C. P.) f oz. in 1 pint of hot water and cool. 

 Add the poison solution to sirup, stir well, add 1.5 lbs. honey, and mix thoroughly. 



A new method of subterranean fumigation, J. S. Houeb {Jour. Econ. Ent., 

 9 (1916), No. 2, pp. 285-287). — The author reports preliminary experiments 

 conducted at the Cuban agricultural experiment station with the fungus grow- 

 ing ant Atta insularis. The principle of the method of control consists in forc- 

 ing vaporized carbon bisulphid into the ant hills. 



Some diflB.culties in gross diagnosis of the infectious brood diseases of 

 bees, A. H. McCray {Jour. Econ. Ent., 9 {1916), No. 1. pp. 192-196).— This is a 

 discussion of some of the difficulties which have been encountered in the 

 examination of over 4,500 different specimens of bee comb and brood, repre- 

 senting every section of the United States. 



FOODS— HUMAN NTJTHmON. 



The iodin content of foods, E. B. Forbes, F. M. Beegle, et al. (Ohio Sta. 

 Bui. 299 (1916), pp. 487-546).— This bulletin presents data regarding the iodin 

 content of a large number of samples of different foods. The investigation was 

 undertaken on account of the role of iodin in the function of the thyroid gland 

 and the possible significance of the iodin content of food in goiter. 



Iodin determinations were made on a large number of common foods pur- 

 chased in the market, and also on samples of the same kinds of food products 

 grown under various conditions as to soil, climate, artificial fertilization, and 

 geographical location. A wide range of both animal and plant products was in- 



