Braley, J.
By a failure to take exceptions the defendant must be deemed to have accepted the master’s report, and the evidence not having been reported, although the plaintiffs duly excepted, they are concluded by his findings of fact. The respective rights of the parties in the land, therefore, must be determined from the report, upon which also depends the question, whether the decree dismissing the bill should be affirmed, or wholly or partially reversed. Whitworth v. Lowell, 178 Mass. 43. French v. Peters, 177 Mass. 568, 572. East Tennessee Land Co. v. Leeson, 183 Mass. 37. In this inquiry, the plaintiffs having informed the master that they did not desire a finding as to any rights of drainage, he left this question undecided, and it is not open on their exceptions and appeal.
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The common grantor under whom all parties derive title was one John F. Bassett, who, having become seised in fee, subdivided the entire tract into lots as shown by the plan, a copy of which is annexed to the bill. The land fronted on Salem Street, *315but two of the lots and the rear portion of the others were accessible only by the use of passageways, and, exclusive of the open passageway and the space described as a “ court,” the whole area was covered with buildings. By separate mortgage deeds of even date and delivery he conveyed lots A, D, E and B, designating each by reference to the plan, “ to be entered of record herewith.” It is through a foreclosure of these mortgages that all subsequent grantees have derived title, and to ascertain the intention of the grantor they may be construed as one instrument. Cloyes v. Sweetser, 4 Cush. 403. Porter v. Sullivan, 7 Gray, 441, 446. In the description of the first two, the space appearing on the plan in the rear of lot B with the connecting passageways is referred to under the designation of either a “ court,” or an “ open court,” and the grant of the first three lots expressly includes a right of way in, along or over the court and passageways to Salem Street in common with others having a like easement, or to whose estates such rights were granted as appurtenant. Having created the dominant estates, lot B is described as “ subject to a right of way ... in and over the passageway and open court on the northerly and easterly sides appurtenant to the other estates designated on said plan.” It is manifest from the plan, which by reference is incorporated, and the language of the instruments, when read together, that the purpose of the grantor was to provide for the rear lands, a permanent outlet to the only public way connected with the property, either before or after the division. Boston Water Power Co. v. Boston, 127 Mass. 374, 376. Salisbury v. Andrews, 128 Mass. 336. Taft v. Emery, 174 Mass. 332. It still remains to determine whether this right was made appurtenant to lot C. After the other lots had been mortgaged, this lot was divided into three parcels, and sold at different times to the same grantee. The deeds contain no reference to either the plan or the easement, except that when conveying the last parcel the grantor and his assignee in insolvency added to the description of the premises, “ together with the benefit of the reservation contained in the mortgage deed ”; but in the interval his ownership of lot B had been transferred by foreclosure, and neither he nor his assignee could then subject it to an additional servitude. Greene v. Canny, 137 Mass. 64. Haverhill *316Savings Bank v. Griffin, 184 Mass. 419, 421. But, if they could not, having been delineated on the plan this lot falls within the description of “ other estates ” referred to in the deed of lot B, and in the master’s summary of facts he finds that at the time not only was a passageway in existence, but the way as described was necessary to its enjoyment. Leonard v. Leonard, 2 Allen, 543. Simpson v. Boston & Maine Railroad, 176 Mass. 359. A right of way under these conditions may become appurtenant to other lands of the grantor by either reservation or exception. In each case the character of the provision must be ascertained from his purpose and intention rather than by any particular form of words. Claflin v. Boston & Albany Railroad, 157 Mass. 489, 493. If considered a reservation, as argued by the defendant, the right of passage was limited to the life of the grantor, because of the omission of words of inheritance, and, as he has since deceased, the easement perished at his death. The means of communication, however, were intended unquestionably to be unrestricted in time so far as required for the enjoyment of the other estates, and if lot C, which had been retained by him, was deprived of this privilege, its value, either for his own use or for sale or rental, would have been greatly impaired, — a result which he could not have intended; and the perpetual right of way granted to the other lots in common also becomes by exception appurtenant to lot C. Bowen v. Connor, 6 Cush. 132, 136. Brown v. Thissell, 6 Cush. 254, 257. Dennis v. Wilson, 107 Mass. 591, 592, 594. Hogan v. Barry, 143 Mass. 538, 539. White v. New York & New England Railroad, 156 Mass. 181. Hamlin v. New York New & England Railroad, 160 Mass. 459.
The plaintiff Goldstein, who owns lot A, and the plaintiff Lipsky, who owns lots C, D and E, under mesne conveyances, have acquired as against the defendant, who has succeeded to the title of lot B, convenient rights of way over the unoccupied land shown on the plan. Boland v. St. John's Schools, 163 Mass. 229, 236, 237.
In the bill as amended the plaintiffs allege that by the use of the words “ open court ” Bassett intended to convey, and did convey, an easement of light and air as appurtenant to their respective estates; but without express words a deed of land conveys no right to light and air over other lands, and the various deeds *317in the chain of title contain no express grant of such an easement. Brooks v. Reynolds, 106 Mass. 31, 32. Salisbury v. Andrews, 128 Mass. 336. Ladd v. Boston, 151 Mass. 585. Baker v. Willard, 171 Mass. 220. They further contend that by either implied grant or estoppel this right was annexed. If the grantor had said that the court was not to be built over, or was to be kept open and maintained by the abutters, as in Schwoerer v. Boylston Market Association, 99 Mass. 285, Attorney General V. Williams, 140 Mass. 329, or should always lie open as a way, as in Salisbury v. Andrews, 128 Mass. 336, 343, or its existence' was shown to have been absolutely necessary to afford light and air required for the enjoyment of the surrounding premises, as in Case v. Minot, 158 Mass. 577, there would have been by implication a covenant that the entire space should remain unoccupied by buildings. Emerson v. Wiley, 10 Pick. 310. Brooks v. Reynolds, 106 Mass. 31. Case v. Minot, 158 Mass. 577, 585, and cases cited. A comparison of the boundaries in the mortgage deeds in connection with the plan, whenever the court is referred to as an abuttal, with the description of the servient estate, makes it plain, as the plaintiffs substantially concede, that Bassett retained the fee in the soil, subject to the rights which had been granted. Codman v. Evans, 1 Allen, 443. Jamaica Pond Aqueduct v. Chandler, 9 Allen, 159, 164. Killion v. Kelley, 120 Mass. 47. Whether an easement arises by implication depends upon the circumstances shown by the evidence as existing at the time of the grant. Salisbury v. Andrews, 19 Pick. 250, 255. This portion of the entire tract being within the boundaries of lot B, some form of reference was imperative when this space was named either as the general location of the rights of way or as an abuttal.
The burden of proof was upon the plaintiffs to show that this servitude had been created, and made appurtenant to their estates by implication. Beals v. Case, 138 Mass. 138, 140. Clapp v. Wilder, 176 Mass. 332. The master on the evidence before him found and ruled that the words “ court ” and “ open court,” being merely descriptive in the conveyancing, were not intended to create a distinct right to light and air, and as he made no finding that at the time such an easement was indispensable for the reasonable enjoyment of the estate, an implied grant after *318division cannot be raised by construction. Keats v. Hugo, 115 Mass. 204. Baker v. Willard, 171 Mass. 220, 227. Clapp v. Wilder, 176 Mass. 332, 338. It is further urged that under the rule in Salisbury v. Andrews, 19 Pick. 250, 258, the way covered the area of the court. But while the use has been general and unopposed, and the surface has been repaired at the expense of the lot owners, the right to pass and repass is described as “in and over the passageway and open court on the northerly and easterly sides,” and these words being unambiguous, the way and the court were not commensurate in width. Johnson v. Kinnicutt, 2 Cush. 153. O'Brien v. Murphy, 189 Mass. 353. Because the deeds, even with the accompanying plan, did not define its width on the northerly and easterly sides, or the location and width on the southerly side, it was a question of fact as to what the parties intended as to these limits at the time of the original conveyance. George v. Cox, 114 Mass. 382. Decatur v. Walker, 137 Mass. 141. The master decided upon the evidence before him, that no definite assignment having been made by deed, or established by user, the plaintiffs were entitled to a convenient way, whose width throughout should be determined by its sufficiency to afford ample ingress and egress for the owners, and occupants of the dominant estates. George v. Cox, ubi supra. Stetson v. Curtis, 119 Mass. 266. Having reached this conclusion, and finding that no rights by prescription had been acquired, he accordingly located the way along the northerly and easterly sides, and fixed its width to correspond in breadth with the covered passageway through which communication with the street was obtained. Yet as lot C did not extend easterly far enough to abut on the way as located, he further decided, that a connecting passageway of like width was an essential part of the easement. The way as thus defined having been determined to be not only convenient, but within the terms of the easement as it existed at the date of the deeds, finally fixes the place where it is to be used and enjoyed. Atkins v. Bordman, 20 Pick. 291, 295, 296; S. C. 2 Met. 457.
If it is settled that the defendant’s ownership of the soil confers the right to improve the property in any manner not inconsistent with the easement, the master reports, that, if built from the ground level, the proposed addition to the rear of his build*319ing will extend completely across the way on the southerly side of lot C. Atkins v. Bordman, 2 Met. 457. Gerrish v. Shattuck, 132 Mass. 235. Burnham v. Nevins, 144 Mass. 88. There having been no location in height except as might be required for its comfortable use, he determined, if the way was so arched or built over as to correspond in height with the exit, there would be no unlawful interference with the rights of passage, yet no reference is made to the method of construction. If not entitled to have the way kept open to the sky, the plaintiffs cannot be deprived of the access of light and air, in so far as these elements are indispensable to its use for the purposes of a passageway of the dimensions which have been established, and the defendant must leave such openings for light and ventilation as may be found necessary for the convenience of travellers. Richardson v. Pond, 15 Gray, 387, 390. Atkins v. Bordman, 2 Met. 457, 475.
It follows that so much of the decree as overrules the plaintiffs’ exceptions and confirms the master’s report is affirmed, but in all other particulars it must be reversed, and a decree in their favor entered, the terms of which are to be settled in the Superior Court.
Ordered accordingly.