152 EXPERIMENT STATION KECOED. [Vol. 36 



Birds in their relations to man, C. M, Weed and N. Dearborn {Philadelphia 

 and London: J. B. Lippincott Co., 1916, 2. ed., rev., pp. VIII+390, pis. 18, figs. 

 103). — A revised edition of tlie work previously noted (E. S. R., 15, p. 228). 



A new air-conditioning apparatus, G. A. Dean and R. K. Nabours {Kansas 

 Sta. Rpt. 1915, pp. 46-54, figs. 4)- — Previously noted in part from another 

 source (E. S. R., 33, p. 855). 



Effects of nicotin as an insecticide, N. E. McIndoo {TJ. S. Dept. Agr., Jour. 

 Agr. Research, 7 {1916), No. 3, pp. 89-121, pis. 3).— The studies here reported 

 in detail have been summarized by the author as follows ; 



" Nicotin spray solutions do not pass into the tracheae, nor do they penetrate 

 the integuments of insects. The fumes from nicotin used as a fumigant, the 

 vapors from nicotin spray solutions, and tlie odoriferous particles from 

 evaporated nicotin spray solutions or from powdered tobacco pass into the 

 tracheae and are widely distributed to all the tissues. 



" Regardless of how it is applied, whenever nicotin kills insects, as well as all 

 other animals, it kills by paralysis, which in insects travels along the ventral 

 nerve cord from the abdomen to the brain. The writer does not know just how 

 nicotin paralyzes the nervous system, but he does know that it prevents the 

 nerve cells from functioning, and that in regard to the simplest animals its 

 presence around the cells causes the same structural changes resulting in death 

 as observed when other animals of the same kind are deprived of oxygen. In 

 such cases it seems to kill physically rather than chemically, but the evidence 

 presented does not conclusively prove this view. In the higher animals it may 

 kill by interfering witli oxidation in the cells ; whether this is accomplished 

 physically or chemically the writer does not know, but concluding from the prop- 

 erties of nicotin he is inclined to attribute more to its physical effects than to its 

 chemical effects." 



A bibliography of 25 titles is included. 



Insects injurious to alfalfa, G. A. Dean {Kans. Agr. Col. Ext. Bui. 5 {1916), 

 pp. 36, figs. 40). — Summarized accounts are given of the more important insect 

 enemies of alfalfa, including methods of control. 



Insects attacking onions, H. A. Ballou {Agr. Neivs [Barbados], 15 {1916), 

 Nos. 366, p. 154, fio- 1>' 367, pp. 170, 171). — A brief account of the insect enemies 

 of onions in the West Indies, of which the onion thrips ranks first in importance. 



The more important greenhouse insects, H. B. Weiss {New Jersey Stas. Bui. 

 296 {1916), pp. 3-42, figs. 33). — This bulletin gives summarized accounts of the 

 more important insect pests occurring in greenhouses, including control meas- 

 ures. 



The animal parasites of man, H. B. Fantham, J. W. W. Stephens, and 

 F. V. Theobald {New York: William Wood d Co., 1916, pp. XXXII+900, figs. 

 423). — This work is partly adapted from the fourth edition of Braun's Die 

 Tierischen Parasiten des Menschen, the English or third edition of which has 

 been noted (E. S. R., 17, p. 1011). 



Following an account of parasites in general the protozoa are taken up in 

 the first section (pp. 25-210) and in an appendix (pp. 733-752) by H. B. 

 Fantham; the worms in the second section (pp. 211-482) and in an appendix 

 (pp. 753-755) by J. W. W. Stepliens; and the arthropods in the third section 

 (pp. 483-616) by F. V. Theobald. A supplement containing clinical and thera- 

 peutical notes on the protozoa, worms, and arthropods (pp. 617-732) ; a bibliog- 

 raphy (pp. 756-835) ; and an index (pp. 836-900) are also included. 



New Jersey's insects, H. B. Weiss {Sci. Mo., 3 {1916), No. 4, pp. 385-388).— 

 It is stated that of the insects listed from New Jersey, namely, 10,530, only 1.76 

 per cent are really destructive. 



