PUBLIC RECORD OFFICE
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C.O.
Reference :-
885
20 PUBLIC RECORD OFFICE, LONDON
ALLY WITHOUT PERMISSION OF THE BE REPRODUCED PHOTOGRAPHIC- COPYRIGHT PHOTOGRAPH-NOT TO
in registration fees from the owner.
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The additional amount of Defter Hakani fees which will be collected and paid into the Treasury each year in consequence of the execution of these laws will more than cover this sum, added to which their execution will afford very considerable facility to the Treasury in the collection of taxes.
The advantages of this work have been so fully pointed out by His Excellency the High Commissioner of Cyprus in his confidential despatch to the Secretary of State of 3rd November, 1908, that any further remarks from me would appear superfluous; I might, however, add that in my humble opinion it would amply repay the Government to double the vote and the staff and to complete the work in 10 years instead of 20.
14. With reference to the fourth paragraph of the Secretary of State's despatch, No. 127, of the 5th August, 1910, the enclosure No. 5, which I send here- with, is a report from the Chief Surveyor of this Department giving the detailed information asked for in this paragraph.
F. ONGLEY,
Nicosia, Cyprus,
8th September, 1910.
REGISTRAR-GENERAL,
,
Sub-enclosure 5.
Registrar-General.
Survey Office, Cyprus, 5th September, 1910.
I BEG to acknowledge the receipt of your letter, 115/09, of the 23rd ultimo,
in which you ask me for information on the following points :-
A diagram
(1) Character and accuracy of major triangulation, length of sides. (2) Similar information regarding the minor triangulation.
should be supplied.
(3) Particulars of any traverses which have been run, and their degree of
accuracy.
(4) Diagram of lines chained in any small district.
(5) Diagram of plotting of lines, and limit of error.
(6) Particulars of photographic or sun-printing work, with a specimen plan.
(7) Method of field work generally, together with any other information which may be likely to assist the Colonial Survey Committee in form- ing an opinion as to the character of the work which is being done.
In reply thereto I have the honour to report as follows:-
(1) The accompanying diagram,* marked A, shows the major triangulation of Cyprus which is published, and a list,* marked C, of the co-ordinates of trigono- metrical stations and sheet line distances, are given. This has enabled me to carry on the present survey, as I have been able from those distances to lay down on the plans the exact positions of the trigonometrical stations.
The length of the sides vary with the distance from the base line, and the longest line chained was 184 miles, and the shortest 8 miles.
All angles have been checked by the Director of Public Works and myself and compared with the original angles taken and entered in the Register of Trigono- metrical Angles, and they were found to agree.
(2) In the district of Famagusta which is at the present time being surveyed there are very few minor triangulation points.
So far we have only made use of the one called Pharphari, which is situated on the boundary line of the Famagusta-Nicosia district.
The greatest number of minor trigonometrical points are on the mountainous districts and will come in very useful in the future work to be carried out in their neighbourhood; and after completing the low-lying lands of the Messaoria it will be necessary to form a minor triangulation of the Karpas range of hills, which are broken, and a large area of forest is scattered through the district. All points of the minor triangulation are shown in black line on the diagram A.
(3) The only traverses that have been necessary are those run to connect up outlying portions of the coast line, and these have been of small extent and only from trace line to trace line.
It may be necessary in the future to run traverses where the forest is intersected by patches of cultivation.
• Not printed.
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(4) We have no small districts surveyed in this manner.
(5) Diagram B, which shows all the lines used in making the present survey and gives the trigonometrical distances, chained distances, and where no trigono- metrical distance is given, the plan distance and chained distance.
(6) The sun-printing on ferro galic cloth, from which fairly good results have been obtained, of which two specimen copies* are attached, marked S and V; the examples sent give a fair idea of the nature of the holdings which are being surveyed, those on the east side of the plan marked S are those close to the village of Paralimni, where the divisions are very close, in fact the adjoining plan contains some 1,500 plots.
Those on the west side give the more general average of number of the holdings per square mile.
The attached specimen of a village on a scale of twice the 1/2500 is to show that all villages are surveyed on this scale to enable all the detail to be clearly shown, and should there be any desire on the part of the Government to have the plans published on a reduced scale, these villages could be first reduced and inserted on the 1/2500 plan, and afterwards the completed plans could be reduced to the desired scale.
Some experiments were made with the sepia negative paper with the hope of doing away with the necessity of making tracings from the manuscript plans, but the results were so poor that we have abandoned it for the present.
(7) The attached copy* of a field trace marked T and the diagram B show the method on which the present survey is carried out, and is one based on the Revision Survey of Lancashire and Glamorganshire, on which I was engaged for several years.
The difference between the two surveys lies mainly in the method employed in obtaining the result; in the Lancashire survey large portions were re-surveyed and then examined in the field, and in Glamorgan the original plans were cut up and used.
In Cyprus, this could not done, as the scale of the previous survey was too small, and a new method was adopted so as to have a somewhat similar groundwork to work on to obtain this similarity in the present survey.
In the present survey, the first step was to find the original trigonometrical station by means of the book of descriptions of the locality of the trigonometrical stations, and having found the broad arrow, to check the original angles; after checking, if all the angles are found to agree, the line is traced, and chained with a steel band-chain 500 links long. The chained distance is then compared with the trigonometrical distance, and if they agree to 1 in 1,000 the line is laid down on the manuscript plans by means of a platform table, the trigonometrical points having been previously fixed from the attached printed copy marked C of the co-ordinates of trigonometrical stations and sheet-line distances.
The plan distance is then compared with the trigonometrical distance and chained distance; should they all agree, the crossings of the plan lines and trace lines are measured and entered in the field book to enable me to fix these lines on the ground from the nearest picket cut when chaining the line.
The angle at which the plan line crosses the main line is then obtained by means of a large circular protractor, and this angle is then taken on the ground from the trigonometrical station, and the line traced and chained to the opposite main line; this is then laid down, and any error in the angle is then seen from its junction with the opposite main line; should there be any difference between the plan line and the line chained, a fresh line is laid down, from main line to main line, and the distance chained, and the plan distance is compared, and if found correct, is plotted, and from this line all the crossings of the trace lines and plan lines are again fixed; and this process is continued till all plan lines both latitudinally and longitudinally-are traced and chained; by this means each plan has at least five chained lines round it and through it; all these lines are again chained by the assistant surveyors before beginning the survey of a trace, and by this means every trace is surrounded by chained lines.
The attached specimen, marked T, shows all lines used in making the survey. After the survey of a plan is completed the surveyor takes out all the areas of the holdings, prepares a list of the names of the owners, and enters all this informa- tion on Form N. 105,* marked D, which is then passed on to the Chief Surveyor for examination by him or some other qualified surveyor.
• Not printed.
95
> small districts surveyed in this manner.
, which shows all the lines used in making the present survey nometrical distances, chained distances, and where no trigono-
given, the plan distance and chained distance.
inting on ferro galic cloth, from which fairly good results have hich two specimen copies* are attached, marked S and V; the fair idea of the nature of the holdings which are being surveyed, e of the plan marked S are those close to the village of Paralimni, are very close, in fact the adjoining plan contains some 1,500
est side give the more general average of number of the holdings
pecimen of a village on a scale of twice the 1/2500 is to show surveyed on this scale to enable all the detail to be clearly shown, e any desire on the part of the Government to have the plans aced scale, these villages could be first reduced and inserted on d afterwards the completed plans could be reduced to the desired
nts were made with the sepia negative paper with the hope of he necessity of making tracings from the manuscript plans, but poor that we have abandoned it for the present.
ed copy* of a field trace marked T and the diagram B show the e present survey is carried out, and is one based on the Revision ire and Glamorganshire, on which I was engaged for several
between the two surveys lies mainly in the method employed in ; in the Lancashire survey large portions were re-surveyed and he field, and in Glamorgan the original plans were cut up and
could not done, as the scale of the previous survey was too small, was adopted so as to have a somewhat similar groundwork to his similarity in the present survey.
survey, the first step was to find the original trigonometrical I the book of descriptions of the locality of the trigonometrical g found the broad arrow, to check the original angles; after angles are found to agree, the line is traced, and chained with 500 links long. The chained distance is then compared with distance, and if they agree to 1 in 1,000 the line is laid down plans by means of a platform table, the trigonometrical points usly fixed from the attached printed copy marked C of the onometrical stations and sheet-line distances.
ance is then compared with the trigonometrical distance and hould they all agree, the crossings of the plan lines and trace and entered in the field book to enable me to fix these lines on
e nearest picket cut when chaining the line.
hich the plan line crosses the main line is then obtained by means protractor, and this angle is then taken on the ground from the ion, and the line traced and chained to the opposite main line; own, and any error in the angle is then seen from its junction nain line; should there be any difference between the plan line d, a fresh line is laid down, from main line to main line, and ed, and the plan distance is compared, and if found correct, m this line all the crossings of the trace lines and plan lines this process is continued till all plan lines both latitudinally --are traced and chained; by this means each plan has at least ound it and through it; all these lines are again chained by vors before beginning the survey of a trace, and by this means unded by chained lines.
pecimen, marked T, shows all lines used in making the survey. ey of a plan is completed the surveyor takes out all the areas of res a list of the names of the owners, and enters all this informa- )5,* marked D, which is then passed on to the Chief Surveyor him or some other qualified surveyor.
• Not priuted,
PUBLIC RECORD OFFICE
Reference :-
C.O. 885
20 PUBLIC RECORD OFFICE, LONDON
ALLY WITHOUT PERMISSION OF THE BE REPRODUCED PHOTOGRAPHIC-
COPYRIGHT PHOTOGRAPH-NOT TO