34 



THE AQUARIUM BULLETIN 



C. H. Townsend, to skeletonize all of 

 the Bermuda fishes that died at the 

 New York Aquarium in New York 

 City, and I made many skeletons of 

 all the species that came there. These 

 I worked up, making many photo- 

 graphs of the lot. When the material, 

 with all the plates, was ready for 

 publication, it was offered to several 

 of the largest and wealthiest scienti- 

 fic institutions in New York City, no 

 one of which could see its way to 

 bringing the work out. Since then 

 the work has been offered to the 

 Carnegie Institution, and to a dozen 

 similar places in the United States, 

 but with the same result. It was also 



declined abroad in the British Colon- 

 ies. These facts are simply set forth 

 to exemplify the lack of interest 

 taken in pure anatomical science, 

 particularly in this country. Let us 

 hope that in the next generation such 

 matters will be viewed in a very 

 different light, and that comparative 

 anatomy may regain the place it held 

 during the days of Darwin, Huxley, 

 the Parkers, and the many others who 

 represented the great body of learning 

 in the Victorian Era, which shed so 

 much glory on the civilization of not 

 only the British Empire, but of the 

 world at large. 



Fahrenheit and Centigrade 



It is not always possible to obtain 

 a thermometer in Fahrenheit or Centi- 

 grade as one may elect, and thus 

 fanciers frequently have both in their 

 aquaria with resultant difficulties. 

 The same applies to articles in 

 aquatic publications. 



To this end, therefore, THE 

 AQUARIUM BULLETIN has pre- 

 pared the illustration and explanation 

 herewith. 



Scale on left shows Fahrenheit, 

 each graduation representing 2 

 degrees. 



Scale on right shows Centigrade, 

 each graduation representing 1 

 degree. 



Freezing point and boiling point are 

 and 100, 32 and 212 on the Centi- 

 grade and Fahrenheit respectively. 



One degree of Centigrade is equiv- 

 alent to 1-8/10 degrees of Fahrenheit, 

 i. e. each degree of increase or de- 

 crease of Centigrade means a corres- 

 ponding increase or decrease of 

 1-8/10 degrees on the Fahrenheit 

 scale. 



Difference in degrees between 

 freezing and boiling point is 100 in 

 the Centigrade and 180 in the Fahren- 

 heit scale. 



Thermometer shown in cut registers 

 20 degrees on the Centigrade and 68 

 degrees on the Fahrenheit scale. 



In order to convert one scale into 

 the other, the following formulas can 

 be used : 

 Formula No. 1 



No. of degrees of Centigrade — 



(j2 — i.8n) degrees Fahrenheit. 

 Formula No. 2 



No. of degrees of Fahrenheit — 



5(w-j2) degrees Centigrade in 



in which n represents the number of 



degrees of Centigrade or Fahrenheit 



according to formula used. 



Example No. 1 



How many degrees of Fahrenheit 

 are 10 degrees of Centigrade? 



Answer : 



According to formula No. 1 sub- 

 stitute 10 for n and we have: 



