376 



SCIENCE. 



Tablls for Qualitative Chemical Analysis, with 

 an Introductory Chapter on the Course of Analysis, by 

 Professor Heinrich Will of Giessen, Germany. 

 Third American, from the eleventh German, edition. 

 Edited by Charles F. Himes, Ph. D. Henry Carey 

 Baird & Co., Philadelphia, 1881. Price, $1.50. 

 In this work a series of fourteen tables are presented 

 which will be found of the highest value to the chemical 

 student, and will be the meaus of saving a large amount 

 of time if used by those engaged in chemical analysis. 

 These tables are compact, but sufficiently explicit, and 

 the summary view of the general course of qualitative 

 analysis, and of the classification of compounds, accord- 

 ing to the properties relied upon for their detection, 

 afford a thread, as it were, around which chemical facts 

 may crystalize as they accumulate. These tables appear 

 well adapted for a course of college studies, and their 

 popularity and scientific character is indicated by their 

 general adoption in the German Universities. With such 

 an endorsement, we anticipate a large sale for this book 

 among American students of Chemistry. 



TRICHINA IN RATS. 



In regard to Dr. Glazier's belief that rats are not the 

 "headquarters" of tricliin;c elaborate, expressed in his 

 official report on trichinx and trichinosis, the following, 

 taken from the Geitschrift fiir unkros Kopische Fhisch- 

 sc/ian, is of interest : 



Dr. Merkel, County Physician at Nuronberg, Bavaria, 

 had asked the Microscopical Society at that city to examine 

 as many rats for trichinae as they could collect for the pur- 

 pose. He distributed blanks among the members, which 



lie requested tu be filled. Within six months ill of these 

 troublesome animals had been so examined, with the fol- 

 lowing result : 



Of 40 rats caught at or near abattoirs, 8 (20;,') showed 

 trichime, while 71, caught on private property, showed 8 

 (11.27;/); total, in rats, showed 16(14.4$). 



This would certainly confirm the idea that the neighbor- 

 heod of those places where swine will devour anything that 

 offers — which they would presumptively do otherwise only 

 after having been fed — rats are more dangerously infected 

 than where the porcine tribe is more regularly cared for. 



Some New Facts About Rabies.— It is known that M. 

 Pasteur is directing his attention to the subject of rabies. 

 The virus of that disorder of course exists in the saliva, but 

 M. Pasteur has now proved that it does not exist there only. 

 The brain substance also contains it, and, used to inoculate 

 healthy animals, will reproduce the disease as effectively as 

 the saliva. Matter from the medulla oblongata and the 

 frontal portion of one of the brain hemispheres and the 

 liquid of the brain have been thus employed with success. 

 Again, one of the great difficulties in research on rabies 

 arises from the uncertainty of development of the evil after 

 inoculation or a bite, and the long time of incubation. M. 

 Pasteur is now able to communicate the disease surely, and 

 to shorten considerably the time of incubation. His method 

 is to inoculate directly the surface of the brain, having re- 

 course to trepanation, and using as inoculating matter the 

 cerebral substance of a mad dog as pure as possible. In 

 that case the first symptoms of rabies appear infallibly in a 

 week or two, and death ensues in less than three weeks. 

 In these researches, of which we may expect to hear more 

 shortly, M. Pasteur has the co-operation of MM. Chamber- 

 lain, Roux and Thuilier. 



METEOROLOGICAL REPORT FOR NEW YORK CITY FOR THE WEEK ENDING JULY 30, 1881. 



Latitude 40 45' 58 " N.; Longitude 73 57' 58 ' W.; height of instruments above the ground, 53 feet ; above the sea, 97 



feet ; by self-recording instruments. 



BAROMETER. 



THERMOMETERS. 



JULY. 



MEAN FOR 

 THE DAV. 



MAXIMUM. 



MINIMUM. 



MEAN. 



MAXIMUM. 



MINIMUM. 



maxi'm 



Reduced 

 to 



Freezing. 



Reduced 



to 



Freezing. 



Time. 



Reduced 

 to 



Freezing. 



Time. 



Dry 

 Bulb. 



Wet 

 Bulb. 



Dry 

 Bulb. 



Time. 



Wet 

 Bulb. 



Time. 



Dry 

 Bulb. 



Time. 



Wet 

 Bulb. 



Time. 



In Sun. 



Sunday, 24.- 

 Monday, 25-- 

 Tuesday, 26.. 

 Wednesday, 27 . 

 Thursday, 28-. 

 Friday, 29.. 

 Saturday, 30.. 



29.81? 

 29.809 

 29.730 

 29.726 

 29-75I 

 30.017 

 33.164 



29.862 

 29.862 

 29.748 

 29.776 

 29.836 

 30. 102 

 30.190 



12 p. m. 

 a. m. 



a. m. 

 9 a. m. 



12 p. m. 

 12 p. m. 



1 p. m. 



29.722 



29-744 

 29.704 

 29.698 

 29.702 

 29.836 

 30.102 



a. m 

 6 p. m. 



5 P- m. 



6 p. m. 

 a. m 

 a. m. 

 a. m. 



76-3 

 77.6 

 76.3 

 7'-3 

 7i-3 

 68.0 

 64.6 



68.3 

 72.0 

 7°-3 

 67.0 

 67.0 

 67.6 

 64.0 



85 



86 

 81 

 80 

 78 

 72 

 68 



3 P. m- 



4 p. m. 

 3 P- m, 



5 P- m- 

 1 p. m. 

 3 P- m. 



11 a. m. 



73 

 76 

 72 

 70 

 70 

 7° 

 66 



3 p. m. 



4 P- m. 

 10 a. m. 



6 p m. 



5 P- m. 

 3 P- m. 

 3 a. m. 



65 

 71 

 71 

 65 

 63 

 64 



64 



5 a. m. 



5 a. m. 

 12 p. m. 



5 a. m. 



5 a. m. 



5 a- m. 

 12 p. m. 



63 

 67 

 69 

 65 

 63 

 64 

 64 



5 a. m. 



5 a. m. 

 12 p. m. 



5 a. m. 



5 a. m. 



1 a. m. 

 12 p. m. 



143- 

 138. 

 13°- 

 127. 



•43- 

 126. 

 94. 



Mean for the week 29.858 inches. 



Maximum for the week at j pm., July 30th. 30.190 " 



Minimum " at C pm., " 27ih 29.698 " 



Range 492 _ 



Dry. Wet. 



Mean for the week 71.2 degrees 68.0 degrees. 



Maximum for the week, at 4 pm. 25th 86. '• at 4 pm 25th, 76. " 

 Minimum " " 5 am. 28th 63. " at 5 am 28th, 63. " 

 Range " " 23. •< 13. " 



WIND 



DIRECT II IN. 



JULY. 



7 a. m. 2 p. m. 



Sunday, 24. n. n.w. s. w. 

 Monday, 25. s. w. s. 

 Tuesday, 26. s. s. w. w.n.w. 

 Wednesday ,27. n. n. w. n.w. 

 Thursday, 28. n.w. w.n.w. 

 Friday, 29. n. e. e. 

 Saturday, 30. n. e. n. c. 



CLOUDS. 



CLEAR, 

 OVFKCAST, 



2 cir. 



9 cu. 



9 cu. 



1 cir. 

 10 

 ro 



2 cir. cu. o 

 7 cir.cu. 2 cir. cu. 

 7 cu. s. 5 cu. 

 7 cir. cu. o 

 9 cu. lo 

 8 cir. CU.I5 cu. 

 9 cu. 10 



RAIN AND SNOW. 



DEPTH OF RAIN AND SNOW 

 IN INCHES. 



Time 



of 

 Begin- 

 ing. 



0.30 pm 

 8.00pm 



Time 



of 

 End- 

 ing. 



2 pm. 

 12 pm. 



Dura- 

 tion. 



h. m. 



1.30 

 4.00 



B o 



I! 

 < 



Distance traveled during the week 

 Maximum force 



979 miles. 

 SX lbs. 



Total amount of water for the week 20 inch. 



Duration of rain 5 hours 30 minutes. 



DANIEL DRAPER, Ph. D. 

 Director Meteorological Observatory of the Department of Public Parks, New York. 



