March 3, 1893,] 



SCIENCE. 



125 



and Italy." a volume of historical and archseological papers by 

 the late Professor Freeman; "Venice: an histoiical sketch of 

 the Republic," by Horatio F. Brown. New issues in their various 

 series will be "Napoleon," by W. O'Connor Morris, in Heroes of 

 the Nations; "Story of Poland,' by W. R. Morfill, in Story of 

 the Nations; "The Silver Situation in the United States," by 

 Professor F. W. Taussig, in the Questions of the Day Series. 

 "Vertebrate Embryology," by Dr. A. Milnes Marshall, professor 

 of zoology in Owens College, England, and C. H. Hurst, demon- 

 strator of zoology in Owens College; and "A Junior Course in 

 Practical Zoology," by the same authors. 



— D. Lothrop Company announce " In the Wake of Columbus," 

 an illustrated account of travel along the track of the great dis- 

 coverer; "From Cordova to Cathay," by Frederick A. Ober, who 

 was the special Columbus commis^sioner sent out by the World's 

 Fair directory to gather facts and relics. 



— The January Century has been out of print for some time, and 

 of the February number the publishers now have unfilled orders 

 for more than five thousand copies awaiting a new edition. A 

 large first edition of the March Century, containing the Reminis- 

 cences of Napoleon at Elba, will be ready on the first day of 

 March. 



— At the recent meeting of the Indiana Academy of Science, 

 Dr. RohertrHessIer, of Indianapolis, read a paper on "An Ex- 

 treme Case of Parasitism." It was a case of that extremely rare 

 and almost extinct form of the itch known as "Norway Itch," 

 the Scabies Norvegica of Hebra, and who first described it in 1852. 

 The paper was prefaced by some remarks on the itch mite and 

 on the itch. It was not until 1835 that the mite Sarcopter scabiei, 

 De Geer, was universally recognized as the cause of the itch. 

 There is no uniformity acnoiig medical authors concerning the 

 scientific names for the mite. Acitrus scobiei and Saixopten 

 hominis are frequently given in medical wcrks. Tlie size is also 



variously given, from "very minute almost microscopic" up to 

 "the size of a pin-head." Scabies, or the itch, is the result of 

 the presence of the human itch mite on the body. Occasionally 

 although rarely, mites from the domestic animals produce a 

 similar erujrtion on the human body. In an ordinary acute or 

 epidemic case of the itch the number of mites is quite small, 

 probably rarely exceeding one hundred adult animals. Norway 

 itch is so rare that modern treatises on skin diseases, especially 

 those of our country, do not describe it. very few even mention 

 it. The writer is inclined to believe that a case of this kind cor- 

 responds, medically, to a "freak" or "sport" of the naturalist 

 or evolutionist; it shows us what was formerly of frequent occur- 

 rence — owing to unoleanliness and a want of proper parasiti- 

 cides. The afHicted man when first seen was covered with thick 

 creamy-white, leathery scales. "He was covered with scales 

 like a fish." Some of these scales measured over one inch in 

 diameter and oae-tenth inch in thickness. These scales were not 

 crusts or scabs, they were overgrowths of the skin due to in- 

 creased cell activity from the irritation of the mites. A constant 

 shedding of these scales was going on, a handful could be gath- 

 ered daily. In a search for the cause of this skin eruption, the 

 doctor found the mites and at once estat)lished the diagnosie. 

 The epithelium, that is, the scales, were found to be full of mites 

 and eggs and riddled with burrows or passages. Under appro- 

 priate remedies the mites were soon exterminated. The cause 

 of the disease once removed, the skin soon regained its normal 

 character and the patient was cured. Dr. Hessler made a calcu- 

 lation of the total number of mites and eggs on the body of the 

 man when first seen. Pieces of scale of a definite size were 

 stained, imbedded, sectioned and mounted in serials. Diagrams 

 were made of each section, indicating the position of the mites 

 and eggs, and the count made therefrom. A simple calculation 

 gave the figures for the entire body. Here are the results: Eggs 

 and empty shells, 7,004,000; mites in all stages of development, 

 3,009,000. 



Dr. T H. Andrews, Jefferson 

 Medical College, Philadelphia, says of 



Horsford's Acid Phosphate. 



" A wonderful remedy which gave me 

 most gratifying results in the worst 

 forms of dyspepsia." 



It reaches various forms of 

 Dyspepsia that no other medi- 

 cine seems to touch, assisting 

 the weakened stomach, and 

 making the process of diges- 

 tion natural and easy. 



Descriptive pamphlet free on application to 

 n uiiilord Chemical Works, Providence, R. I. 



Beware of Substitutes and Imitations. 



For sale by all Druggists. 



Exchanges. 



[Freeof charge to all, if ofsatisfactory character. 

 Address N. D. C. Hodges, 874 Broadway, New York.l 



For sale — A Zentmayer new model U. S. Army 

 Hospital monocular stand. Price §110, will sell for 

 S75. Address H. C. Wells, No. 151 Broadway, New 

 York. 



For sale — A complete set of the third series of the 

 American Journal of Science (1870-1893) handsomely 

 bound in single volumes in dark brown half moroc- 

 co. Address G. H. Williams, 803 Cathedral Street, 

 Baltimore, Md. 



For sale, or for exchange for books on medi- 

 cine or surgery, new editions only, a targe geo- 

 logical library, containing nearly all the State and 

 Government Reports since ]8ii5. Will be pleased to 

 answer letters of inquiry and give information. 

 Address E. ELLSWORTH CALL, Louisville, Ky. 



For exchange. —Slides of Indian Territory Loup 

 Fork Tertiary Diatoms for other microscopic fos- 

 sils. Address S. W. WILLISTON, Univ. of Kansas, 

 Lawrence, Kans. 



For exchange. — Will exchange an *' Ideal" Mi 

 croscnpe of R and J. Beck, London, 2 eye pieces 

 8 objectives, 3 inch, 1 inch, 1-6 inch; bulPs eye con 

 denser on stand, substage condenser, mechanica 

 stage, etc , for any of the leading makes of type 

 writers. Particulars by mail. DELOS PALL, Albion 

 College, Albion, Mich. 



Sale, or exchange for similar material ; Diatoms 

 (Istbmia nervosa), unmounted, from San Francis 

 CO Bay. M. J. ELBOD, Bloomington, 111. 



For sale or exchange. — T have a few copies of my 

 translation of "Strasburger's Manual of Vegetable 

 Histology, 1887," now out of print, which I will send 

 post-paid for $3 or for one dozen good slides illus- 

 trating plant or animal structure. Address A. B. 

 Hervey, St. Lawrence University, Canton, N. Y. 



The undersigned has the following specimens to 

 exchange for crystals of any eastern or foreign lo- 

 calities or Indian relics: tin ore, metacinnabarite, 

 stibnite, garnierite, calenanite, hanksite, ulexite, 

 rubellite, lepidolite, blue and green onyx, Cat. pine- 

 ite, aragonite on chalcedony, cinnabar, double re- 

 fracting spar, clear and clouded, and others. J. R. 

 Bush, care of General Delivery, Los Angeles, Cal. 



For sale or exchange. — A private cabinet of about 

 200 species of fossils, well distributed geologically 

 and geographically. Silurian, about 40; Devonian, 

 about 50; Carboniferous, about 80; others, about 80. 

 Frank S. Aby, State University, Iowa City, la. 



Wants. 



. or university is open to engagement. 

 , Box 86, Rochester, Mich. 



^AN any one inform me as to the age to which 

 cats have lived? I have one twenty years old. 

 ., T^ TIT.,.,, ,.,0 . Eighty-flrst St., New York. 



Edward D. Webb, 133 ' 



WANTED — Second-hand. Poster's Physiology, 

 Balfour's Comparative Embryology, Claus & 

 Sedgwick's Zoology, Flower's Osteology of Mam- 

 malia. Vine's Physiology of Plants. Please state 

 editions and prices asked and address Richard 

 Lees Brampton, Ontario, Canada 



WANTED.— American Journal of Conchology, 

 seven volumes. Parties having these for 

 sale will please address the undersigned, stating 

 condition and price. R.EUsworth Call,Louisville,Ky. 



A GRADUATE ENGINEER will give instruction 

 evenings in geometry, trigonometry and sur- 

 veying, mechanics, physics, mechanical drawing 

 and general engineering construction. Five years' 

 experience in field and editorial work on engineer- 

 ing journal. References furnished. C. S. H., 102 

 Tribune Building, New York. 



WANTED. — By well - qualified and experienced 

 science master and associate of the Royal 

 School of Mines, London, aged 26 (at present in 

 England), a mastership in technical college or uni- 

 versity for any of the following subjects: Engineer- 

 ing sciences, geology and mineralogy, physics, chem- 

 istry and metallurgy, etc.. etc. Can provide excel- 

 lent references and credentials. Apply, J. G., 17 

 Sussex St., Rochdale, England. 



A GRADUATE of the University of Pennsylvania 

 and a practical mineralogist of twenty years' 

 experience desires to give his services and a cabi- 

 net of 25.C00 specimens, all named, with about the 

 same number of duplicates, in minerals, crystals, 

 rocks, gems, fossils, shells, archseological and ethno- 

 logical specimens and woods to any institution de- 

 siring a fine outfit for study. The owner will in- 

 crease the cabinet to 50.000 specimens in two years 

 and will act as curator. Correspondence solicited 

 from any scientific institution. J. W. Hortter, 

 M.D., Ph.D., San Francisco, Cal., General P. O. 

 Delivery. 



