257 
1870.] J. Wood-Mason— New Species ofllestias. 
get the signalling currents for all the lines terminating in an office into the 
bargain, and the costly and cumbersome galvanic apparatus might be dis¬ 
pensed with.” 
On the 14th October, 1879, Mr. Schwendler telegraphed by this me¬ 
thod to Agra. The main current was produced at the Alipore Government 
Telegraph Workshops, and the useful work consisted of a powerful Electric 
Light, illuminating the Workshops perfectly. An ordinary Telegraph line 
conveyed the branch current to the Calcutta Signalling Office, where it was 
joined to the Agra line (S50 miles in length) ; and several messages were des¬ 
patched by the use of this current. No alteration of the electric light 
could be observed when telegraphing ; and this, of course, is quite right, 
since the signalling current tapped off was scarcely 0'04 per cent, of the main 
current producing the light. 
Other experiments equally successful were made. In fact, feeding in 
this manner all the 14 lines which terminate at the Calcutta Office, scarcely 
more than 5'0 per cent, of the total main current is required. 
Mr. Schwendler concluded by saying that there was little doubt left 
that, at no distant future, Telegraph lines would be supplied with currents 
produced by Dynamo-Electric machines instead of using galvanic currents 
as hitherto. 
The paper will be published in full in the Journal, Part II. 
3. Notes on the Survey Operations in Afghanistan during the Campaign 
of 1878-79 ; compiled, from Letters and Diaries of the Survey Officers, 
by Majob J. Watebhouse. Communicated by Majoe-Genl. J. T. 
Waleieb, b. e., c. b., f. e. s. 
(Abstract.) 
This paper gives an account of the work performed by the Survey par¬ 
ties attached to the Quetta, Kuram and Peshawar Columns of the Afghan 
Expeditionary Force in 1878-79, and will be published, with a map, in the 
forthcoming number of Part II of the Journal. 
4. On the Systematic Position of some little-icnown Asiatic Mantodea, 
icith Descriptions of two new Species belonging to the Genus Hestias. 
By J. Wood-Mason. 
(Abstract.) 
Genus IIestias, Saussure. 
The genus IIestias, proposed in 1871 by De Saussure for the reception 
of a remarkable insect from Sylhet, is referred to the subfamily llar- 
pagidae, wherein it must take its place next after, or in the immediate 
neighbourhood of, Acromantis and its allies, from which it is readily distin- 
