THE DEVELOPMENT OF METEOROLOGY. 51 
this line has been published by my colleague, Professor Bige- 
low, in his Weather Bureau Report on International Cloud 
Observations. He has not only discussed all the observations 
of clouds made in connection with the International Program 
during the year 1896-7, but has added to this a memoir that 
is quite unique in meteorology, including a complete system 
of fundamental constants, formulae, and reduction tables. I 
need only add that my colleague’s work on the hydrody- 
namics and thermodynamics of terrestial meteorology as con- 
tained in this volume will undoubtedly be recognized as per- 
fectly sound. By collecting all important formulae and 
numerical constants into one system of tables with uniform 
notation, he has simplified the work of young students and 
rendered it convenient for any one to rapidly survey the in- 
creasing literature of the subject. I especially commend 
his chapters 10 and 11 to experts in mathematical physics. 
He has arranged his numerical tables so as to make them as 
convenient for the solution of his problems as are the dia- 
grams of Hertz and Neuhoff. 
THE WATERSPOUT OF AUGUST, 1896. 
Nothing will more brilliantly illustrate the success with 
which our colleague has attacked atmospheric problems than 
his latest memoir, which is now being published in the 
Monthly Weather Review on “The Waterspout of August, 
1896,” about which I will say a few words. The lantern 
slide pictures that I am about to throw upon the screen are 
exact reproductions, without retouching, of photographs of 
this spout, which occurred on Wednesday, August 19, 1896, 
in Vineyard Sound, Mass. It was fortunately photographed 
or accurately observed from at least six different points south, 
southwest, west, and northwest of the spout itself, the prin- 
cipal views being those taken at Cottage City, on Marthas 
Vineyard, which was about 5 % miles southwest of the track 
of the spout. Fortunately a small schooner was passing 
along between Cottage City and the spout, and as the views 
always include this vessel its movement became the means of 
measuring the exact intervals of time. In order to derive 
8— Bull. Phil. Soc., Wash., Vol. 15. 
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